1 6 2 D O C U M E N T S 1 8 2 , 1 8 3 M A Y 1 9 2 2 “No one shall be proud of his knowledge for others have to work in his stead so that he can study.” A. Einstein, Leyden 1922. 182. To Paul Painlevé Leyden, 8 May 1922 Dear Mr. Painlevé, I unfortunately received your letter late it was forwarded to me.[1] I send you the requested autographs nonetheless in the belief that they have been made use of.[2] The conversations with you were among the most exquisite I experienced in Paris your intensity and objectivity pleased me very much. All in all, I think back on that sojourn in happy gratitude. Cordial regards from yours truly, A. Einstein. 183. From Henri Barbusse Miramar per Théoule (Alpes Maritimes), 8 May 1922 My dear Maestro, No one realizes better than I how little leisure you must have at the moment, hav- ing become the center of a great movement of scientific renewal and revolution. I nevertheless permit myself, relying on the kind benevolence of your earlier attitude,[1] to ask you whether you would not consent to writing a few lines about your sojourn in Paris for our periodical Clarté. Excuse me for abusing your time like this, dedicated as it is to such important and valuable work. But on the other hand, I think that it is my duty to profit by your importance and prestige to further the cause that my friends and I are defending throughout the world: that of rectifying a sister truth to scientific truth, which, like it, is being menaced and oppressed by routine and preconceived ideas. Clarté rises above partisanship and develops the simple and evident ideas that poor humanity is taking so much time to understand and will take even more time to adopt but will nevertheless ultimately realize, because it is a matter of life or death for mankind. It is completely natural for persons who take pride in being the modest defenders of a considerable cause to try to find support for their work from those who in another domain knew how to look upward and ahead, who knew how to see what