"Do you think that an American who insists on making up his own mind, who objects to being told what to do, to being pushed around by officious officials, is thereby made un-American? I do not. I think…"

"Do not let your special talents in chemistry, your love for chemistry, keep you from developing your talents in other fields. Do not let yourself be a narrow specialist."

"The human body can make a number of substances, but it cannot make vitamin C."

"I have always been a non-conformist."

"I have come to the conclusion that the proper way to live is to be kind to everyone."