[A vitamin is] a substance you get sick from if you don't eat it.

If any student comes to me and says he wants to be useful to mankind and go into research to alleviate human suffering, I advise him to go into charity instead. Research wants real egotists who seek their own pleasure and satisfaction, but find it in solving the puzzles of nature.

This oxidation of hydrogen in stages seems to be one of the basic principles of biological oxidation.

Whatever a man does he must do first in his mind.

A discovery is said to be an accident meeting a prepared mind.

I always tried to live up to Leo Szilard's commandment, "don't lie if you don't have to." I had to. I filled up pages with words and plans I knew I would not follow. When I go home from my laboratory in the late afternoon, I often do not know what I am going to do the next day. I expect to think that up during the night. How could I tell them what I would do a year hence?

Water, the Hub of Life. Water is its mater and matrix, mother and medium. Water is the most extraordinary substance! Practically all its properties are anomolous, which enabled life to use it as building material for its machinery. Life is water dancing to the tune of solids.