This photo shows Albert Einstein teaching relativity to a class at Lincoln University, Pennsylvania, in 1946. This shot became famous because it shows Einstein teaching a class composed entirely of African Americans. At that time, racism was still very present in this field (and not only).

While some teachers opposed his approach, he saw only potential in these young people. “Racial separation is not a disease of the blacks, but a disease of the whites. And I do not intend to remain silent about this,” said the Nobel Prize winner.

It is good to remember that for science, human races do not exist.