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

The whole of science is nothing more than a refinement of everyday thinking.

The man of science is a poor philosopher.

It stands to the everlasting credit of science that by acting on the human mind it has overcome man's insecurity before himself and before nature.

All that is valuable in human society depends upon the opportunity for development accorded the individual.

Only one who devotes himself to a cause with his whole strength and soul can be a true master. For this reason mastery demands all of a person.

One strength of the communist system of the East is that it has some of the character of a religion and inspires the emotions of a religion.

Try not to become a man of success, but rather try to become a man of value.

Strive not to be a success, but rather to be of value.

It is the supreme art of the teacher to awaken joy in creative expression and knowledge.