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.
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.