.. free and responsible development of the individual, so that he may place his powers freely and gladly in the service of all mankind. There is no room in this for the divinization of a nation, of a class, let alone of an individual. Are we not all children of one father, as it is said in religious language?

My sailing system set sail, make it fast, no thoughts of energy or velocity, loll back, let boat drift.

You are right in speaking of the moral foundations of science, but you cannot turn around and speak of the scientific foundations of morality.

Man owes his strength in the struggle for existence to the fact that he is a social animal.

Most of the fundamental ideas of science are essentially simple, and may, as a rule, be expressed in a language comprehensible to everyone.

The Bible is a collection of honorable, but primitive legends which are still nevertheless pretty childish.

All the fifty years of conscious brooding have brought me no closer to answer the question, "What are light quanta?" Of course today every rascal thinks he knows the answer, but he is deluding himself.