After days of living in the Rio heat, he wrote that Brazil is “too hot and humid to do any intellectual work.”
The last straw was a conference given at the Clube de Engenharia, on May 6. There was no room for a soul inside the hot, stuffy auditorium.
And, to make matters worse, it was not the scientists who filled the improvised sauna: the audience was mainly made up of soldiers and politicians with their spouses and children.
The result:
Einstein sweated as he tried to explain (in French) complex physics concepts to an audience of laymen. All this amidst the noise of the street, cries and screams of children.