"Humanity needs practical men, who get the most out of their work, and, without forgetting the general good, safeguard their own interests. But humanity also needs dreamers, for whom the disinterested …"

"You cannot hope to build a better world without improving the individuals. To that end, each of us must work for his own improvement, and at the same time share a general responsibility for all humani…"

"I have often been asked if I think that women should be allowed to vote. I think that women should be allowed to do anything that men are allowed to do."

"A scientist must not be a poet. A scientist must be a scientist."

"Life is not easy for any of us. But what of that? We must have perseverance and above all confidence in ourselves. We must believe that we are gifted for something and that this thing must be attained…"