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.

Research is to see what everybody else has seen, and to think what nobody else has thought.

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

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.

To regulate something always requires two opposing factors. You cannot regulate by a single factor. To give an example, the traffic in the streets could not be controlled by a green light or a red light alone. It needs a green light and a red light as well. The ratio between retine and promine determines whether there is any motion, any growth, or not. Two different inclinations have to be there in readiness to make the cells proliferate.

Investigations during the last few decades have brought hydrogen instead of carbon, and instead of CO2 water, the mother of all life, into the foreground.

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