For Einstein, the assassination of Rathenau provided a bitter lesson: assimilation did not bring safety. “I regretted the fact that he became a government minister,” Einstein wrote in a tribute he sent to a German magazine. “In view of the attitude that large numbers of educated Germans have towards Jews, I have always thought that the proper conduct of the Jews in public life should be one of proud reserve.”66
Police warned Einstein that he might be next. His name appeared on the target lists prepared by Nazi sympathizers. He should leave Berlin, officials said, or at least avoid any public lectures.
Einstein moved temporarily to Kiel, took a leave of absence from his teaching duties, and wrote to Planck, backing out of the speech he was scheduled to give to the annual convention of German scientists. Lenard and Gehrcke had led a group of nineteen scientists who published a “Declaration of Protest” aimed at barring him from that convention, and Einstein realized that his fame had come back to haunt him. “The newspapers have mentioned my name too often, thus mobilizing the rabble against me,” he explained in his note of apology to Planck.67
The months after Rathenau’s assassination were “nerve-wracking,” Einstein lamented to his friend Maurice Solovine. “I am always on the alert.”68 To Marie Curie he confided that he would probably quit his positions in Berlin and find someplace else to live. She urged him to stay and fight instead: “I think that your friend Rathenau would have encouraged you to make an effort.”69
One option he considered briefly was a move to Kiel, on Germany’s Baltic coast, to work at an engineering firm there run by a friend. He had already developed for the firm a new design for a navigational gyroscope, which it patented in 1922 and for which he was paid 20,000 marks in cash.
The firm’s owner was surprised but thrilled when Einstein suggested that he might be willing to move there, buy a villa, and become an engineer rather than a theoretical physicist. “The prospect of a downright normal human existence in quietude, combined with the welcome chance of practical work in the factory, delights me,” Einstein said. “Plus the wonderful scenery, sailing—enviable!”
But he quickly abandoned the idea, blaming it on Elsa’s “horror” of any change. Elsa, for her part, pointed out, no doubt correctly, that it was really Einstein’s own decision.“This business of quietude is an illusion,” she wrote.70
Why didn’t he leave Berlin? He had lived there for eight years, longer than anywhere since running away from Munich as a schoolboy. Anti-Semitism was rising, the economy collapsing, and Kiel was certainly not his only option. The light from his star was causing his friends in both Leiden and Zurich to try repeatedly to recruit him with lucrative job offers.
His inertia is hard to explain, but it is indicative of a change that became evident in both his personal life and his scientific work during the 1920s. He had once been a restless rebel who hopped from job to job, insight to insight, resisting anything that smacked of restraint. He had been repelled by conventional respectability. But now he personified it. From being a romantic youth who fancied himself a footloose bohemian he had settled, with but a few stabs at ironic detachment, into a bourgeois life with a doting hausfrau and a richly wallpapered home filled with heavy Biedermeier furniture. He was no longer restless. He was comfortable.
Despite his qualms about publicity and resolve to lie low, it was not in Einstein’s nature to shy away from saying what he thought. Nor was he always able to resist demands that he play a public role. Thus he showed up at a huge pacifist rally in a Berlin public park on August 1, just five weeks after Rathenau’s assassination. Although he did not speak, he agreed to be paraded around the rally in a car.71
Earlier that year, he had joined the League of Nations’ International Committee on Intellectual Cooperation, which sought to promote a pacifist spirit among scholars, and he had persuaded Marie Curie to join as well. Its name and mission was sure to inflame German nationalists. So in the wake of the Rathenau assassination, Einstein declared that he wished to resign. “The situation here is that a Jew would do well to exercise restraint as regards his participation in political affairs,” he wrote a League official. “In addition, I must say that I have no desire to represent people who would certainly not choose me as their representative.”72
Even that small act of public reticence did not hold. Curie and the Oxford professor Gilbert Murray, a leader of the committee, begged him to stay a member, and Einstein promptly withdrew his resignation. For the next two years, he remained peripherally involved, but eventually he broke with the League, partly because it supported France’s seizure of the Ruhr region after Germany was unable to make reparation payments.
He treated the League, as he did so many parts of life, with a slightly detached and amused air. Each member was supposed to give an address to Geneva University students, but Einstein gave a violin recital instead. One evening at a dinner, Murray’s wife asked him why he remained so cheerful given the depravity of the world. “We must remember that this is a very small star,” he responded, “and probably some of the larger and more important stars may be very virtuous and happy.”73
Asia and Palestine, 1922–1923
The unpleasant atmosphere in Germany made Einstein willing to take the most extensive tour of his life, a six-month excursion beginning in October 1922 that would be the only time he would travel either to Asia or what is now Israel. Wherever he went, he was treated as a celebrity, arousing within him the usual mixed emotions. Upon arrival in Ceylon, the Einsteins were whisked away by a waiting rickshaw.“We rode in small one-man carriages drawn at a trot by men of Herculean strength yet delicate build,” he noted in his travel diary. “I was bitterly ashamed to share responsibility for the abominable treatment accorded fellow human beings but was unable to do anything about it.”74
In Singapore, almost the entire Jewish community of more than six hundred turned up at the dock, fortunately trailing no rickshaws. Einstein’s target was the richest of them all, Sir Menasseh Meyer, who was born in Baghdad and made his fortune in the opium and real estate markets. “Our sons are refused admission to the universities of other nations,” he declared in his speech seeking donations for Hebrew University. Not many of his listeners understood German, and Einstein called the event a “desperate calamity of language with good tasting cake.” But it paid off. Meyer gave a sizable donation.75
Einstein’s own take was even greater. His Japanese publisher and hosts paid him 2,000 pounds for his lecture series there. It was a huge success. Close to twenty-five hundred paying customers showed up for the first talk in Tokyo, which lasted four hours with translation, and more thronged the Imperial Palace to watch his arrival there to meet the emperor and empress.
Einstein was typically amused by it all. “No living person deserves this sort of reception,” he told Elsa as they stood on the balcony of their hotel room at dawn listening to the cheers of a thousand people who had kept an all-night vigil hoping to glimpse him. “I’m afraid we’re swindlers. We’ll end up in prison yet.” The German ambassador, with a bit of edge to his pen, reported that “the entire journey of the famous man has been mounted and executed as a commercial enterprise.”76
Feeling sorry for his listeners, Einstein shortened his subsequent lecture to under three hours. But as he rode to the next city by train (passing along the way through Hiroshima), he could sense that something was amiss with his hosts. Upon asking what the problem was, he was politely told, “The persons who arranged the second lecture were insulted because it did not last four hours like the first one.” Thenceforth, he lectured long to the patient Japanese audiences.
The Japanese people struck him as gentle and unpretentious, with a deep appreciation for beauty and ideas. “Of all the people I have met, I like the Japanese most, as they are modest, intelligent, considerate, and have a feel for art,” he wrote his two sons.77
On his voyage back west, Einstein made his only visit to Palestine, a memorable twelve-day stay that included stops in Lod,
Tel Aviv, Jerusalem, and Haifa. He was greeted with great British pomp, as if he were a head of state rather than a theoretical physicist. A cannon salute announced his arrival at the palatial residence of the British high commissioner, Sir Herbert Samuel.
Einstein, on the other hand, was typically unpretentious; he and Elsa arrived tired because he had insisted that they travel in the coach-class car of the overnight train from the coast rather than the first-class sleeping car that had been prepared for them. Elsa was so unnerved by the British formality that she went to bed early some nights to avoid ceremonial events. “When my husband commits a breach of etiquette, it is said it’s because he’s a man of genius,” she complained. “In my case, however, it is attributed to lack of culture.”78
Like Lord Haldane, Commissioner Samuel was a serious amateur in philosophy and science. Together he and Einstein walked the Old City of Jerusalem to that holiest shrine for religious Jews, the Western Wall (or Wailing Wall) that flanks Temple Mount. But Einstein’s deepening love for his Jewish heritage did not instill any new appreciation for the Jewish religion. “Dull-minded tribal companions are praying, faces turned to the wall, rocking their bodies forward and back,” he recorded in his diary. “A pitiful sight of men with a past but without a future.”79
The sights of industrious Jewish people building a new land evinced a more positive reaction. One day he went to a reception for a Zionist organization, and the gates of the building were stormed by throngs who wanted to hear him.“I consider this the greatest day of my life,” Einstein proclaimed in the excitement of the moment. “Before, I have always found something to regret in the Jewish soul, and that is the forgetfulness of its own people. Today, I have been made happy by the sight of the Jewish people learning to recognize themselves and to make themselves recognized as a force in the world.”
The most frequent question Einstein was asked was whether he would someday return to Jerusalem to stay. He was unusually discreet in his replies, saying nothing quotable. But he knew, as he confided to one of his hosts, that if he came back he would be “an ornament” with no chance of peace or privacy. As he noted in his diary, “My heart says yes, but my reason says no.”80
CHAPTER FOURTEEN
NOBEL LAUREATE
1921–1927
Einstein in Paris, 1922
The 1921 Prize
It seemed obvious that Einstein would someday win the Nobel Prize for Physics. He had, in fact, already agreed to transfer the money to his first wife, Mileva Mari, when that occurred. The questions were: When would it happen? and, For what?
Once it was announced—in November 1922, awarding him the prize for 1921—the questions were: What took so long? and, Why “especially for his discovery of the law of the photoelectric effect”?
It has been part of the popular lore that Einstein learned that he had finally won while on his way to Japan. “Nobel Prize for physics awarded to you. More by letter,” read the telegram sent on November 10. In fact, he had been alerted as soon as the Swedish Academy made the decision in September, well before he left on his trip.
The chairman of the physics award committee, Svante Arrhenius, had heard that Einstein was planning to go to Japan in October, which meant that he would be away for the ceremony unless he postponed the trip. So he wrote Einstein directly and explicitly: “It will probably be very desirable for you to come to Stockholm in December.” Expressing a principle of pre–jet travel physics, he added, “And if you are then in Japan that will be impossible.”1 Coming from the head of a Nobel Prize committee, it was clear what that meant. There are not a lot of other reasons for physicists to be summoned to Stockholm in December.
Despite knowing that he would finally win, Einstein did not see fit to postpone his trip. Partly it was because he had been passed over so often that it had begun to annoy him.
He had first been nominated for the prize in 1910 by the chemistry laureate Wilhelm Ostwald, who had rejected Einstein’s pleas for a job nine years earlier. Ostwald cited special relativity, emphasizing that the theory involved fundamental physics and not, as some Einstein detractors argued, mere philosophy. It was a point that he reiterated over the next few years as he resubmitted the nomination.
The Swedish committee was mindful of the charge in Alfred Nobel’s will that the prize should go to “the most important discovery or invention,” and it felt that relativity theory was not exactly either of those. So it reported that it needed to wait for more experimental evidence “before one can accept the principle and in particular award it a Nobel prize.”2
Einstein continued to be nominated for his work on relativity during most of the ensuing ten years, gaining support from distinguished theorists such as Wilhelm Wien, although not yet from a still-skeptical Lorentz. His greatest obstacle was that the committee at the time was leery of pure theorists. Three out of the committee’s five members throughout the period from 1910 to 1922 were experimentalists from Sweden’s Uppsala University, known for its fervent devotion to perfecting experimental and measuring techniques. “Swedish physicists with a strong experimentalist bias dominated the committee,” notes Robert Marc Friedman, a historian of science in Oslo. “They held precision measurement as the highest goal for their discipline.” That is one reason Max Planck had to wait until 1919 (when he was awarded the delayed prize for 1918) and why Henri Poincaré never won at all.3
The dramatic announcement in November 1919 that the eclipse observations had confirmed parts of Einstein’s theory should have made 1920 his year. By then Lorentz was no longer such a skeptic. He along with Bohr and six other official nominators wrote in support of Einstein, mostly focusing on his completed theory of relativity. (Planck wrote in support as well, but his letter arrived after the deadline for consideration.) As Lorentz’s letter declared, Einstein “has placed himself in the first rank of physicists of all time.” Bohr’s letter was equally clear: “One faces here an advance of decisive significance.”4
Politics intervened. Up until then, the primary justifications for denying Einstein a Nobel had been scientific: his work was purely theoretical, it lacked experimental grounding, and it putatively did not involve the “discovery” of any new laws. After the eclipse observations, the explanation of the shift in Mercury’s orbit, and other experimental confirmations, these arguments against Einstein were still made, but they were now tinged with more cultural and personal bias. To his critics, the fact that he had suddenly achieved superstar status as the most internationally celebrated scientist since the lightning-tamer Benjamin Franklin was paraded through the streets of Paris was evidence of his self-promotion rather than his worthiness of a Nobel.
This subtext was evident in the internal seven-page report prepared by Arrhenius, the committee chairman, explaining why Einstein should not win the prize in 1920. He noted that the eclipse results had been criticized as ambiguous and that scientists had not yet confirmed the theory’s prediction that light coming from the sun would be shifted toward the red end of the spectrum by the sun’s gravity. He also cited the discredited argument of Ernst Gehrcke, one of the anti-Semitic antirelativists who led the notorious 1920 rally against Einstein that summer in Berlin, that the shift in Mercury’s orbit could be explained by other theories.
Behind the scenes, Einstein’s other leading anti-Semitic critic, Philipp Lenard, was waging a crusade against him. (The following year, Lenard would propose Gehrcke for the prize!) Sven Hedin, a Swedish explorer who was a prominent member of the Academy, later recalled that Lenard worked hard to persuade him and others that “relativity was really not a discovery” and that it had not been proven.5
Arrhenius’s report cited Lenard’s “strong critique of the oddities in Einstein’s generalized theory of relativity.” Lenard’s views were couched as a criticism of physics that was not grounded in experiments and concrete discoveries. But there was a strong undercurrent in the report of Lenard’s animosity to the type of “philosophical conjecturing” that he often dismissed as being a
feature of “Jewish science.”6
So the 1920 prize instead went to another Zurich Polytechnic graduate who was Einstein’s scientific opposite: Charles-Edouard Guillaume, the director of the International Bureau of Weights and Measures, who had made his modest mark on science by assuring that standard measures were more precise and discovering metal alloys that had practical uses, including making good measuring rods. “When the world of physics had entered upon an intellectual adventure of extraordinary proportions, it was remarkable to find Guillaume’s accomplishment, based on routine study and modest theoretical finesse, recognized as a beacon of achievement,” says Friedman. “Even those who opposed relativity theory found Guillaume a bizarre choice.”7
By 1921, the public’s Einstein mania was in full force, for better or worse, and there was a groundswell of support for him from both theoreticians and experimentalists, Germans such as Planck and non-Germans such as Eddington. He garnered fourteen official nominations, far more than any other contender. “Einstein stands above his contemporaries even as Newton did,” wrote Eddington, offering the highest praise a member of the Royal Society could muster.8
This time the prize committee assigned the task of doing a report on relativity to Allvar Gullstrand, a professor of ophthalmology at the University of Uppsala, who had won the prize for medicine in 1911. With little expertise in either the math or the physics of relativity, he criticized Einstein’s theory in a sharp but unknowing manner. Clearly determined to undermine Einstein by any means, Gullstrand’s fifty-page report declared, for example, that the bending of light was not a true test of Einstein’s theory, that the results were not experimentally valid, and that even if they were there were still other ways to explain the phenomenon using classical mechanics. As for Mercury’s orbit, he declared, “It remains unknown until further notice whether the Einstein theory can at all be brought into agreement with the perihelion experiment.” And the effects of special relativity, he said, “lay below the limits of experimental error.” As one who had made his name by devising precision optical measuring instruments, Gullstrand seemed particularly appalled by Einstein’s theory that the length of rigid measuring rods could vary relative to moving observers.9
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