"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."

"I have had a good life, and I am grateful for it. I have done my best to make the world a better place."

"The only difference between a good idea and a bad idea is that a good idea works."

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

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