Discovery consists of looking at the same thing as everyone else and thinking something different.

The real scientist is ready to bear privation and, if need be, starvation rather than let anyone dictate to him which direction his work must take.

"This celebration here tells me that this work is not hopeless. I thank you for this teaching with all my heart and lift my glass to human solidarity, to the ultimate victory of knowledge, peace, good-will and understanding."

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

Why does man behave like perfect idiot? This is the problem I wish to deal with.

Think boldly. Don't be afraid of making mistakes. Don't miss small details, keep your eyes open and be modest in everything except your aims.

A substance that makes you ill if you don't eat it.