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

If I go out into nature, into the unknown, to the fringes of knowledge, everything seems mixed up and contradictory, illogical, and incoherent. This is what research does; it smooths out contradictions and makes things simple, logical, and coherent.

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

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 paper of yours is so lightly written that you must have sweated terribly.

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.

Life is a wondrous phenomenon.