"Just one living cell in the human body is, more complex than New York City."

"Every man of science has some favorite hypothesis which he cultivates, and with which he is so intimately bound up, that he would be glad to see it universally adopted."

"I am not a believer in the idea that you have to be sick to take vitamins."

"Every time you go to the doctor, the doctor asks you to take off your clothes, and then he looks at you, and he tells you what's wrong with you. But he doesn't know anything about you."

"I believe that the pursuit of knowledge is one of the most noble endeavors of humanity."