Concerning matter, we have been all wrong. What we have called matter is energy, whose vibration has been so lowered as to be perceptible to the senses. There is no matter.

Brief is this existence, as a visit in a strange house. The path to be pursued is poorly lit by a flickering consciousness.

The aim (of education) must be the training of independently acting and thinking individuals who, however, see in the service to the community their highest life problem.

A person who never made a mistake never tried anything new.

The important things are always simple.

I cannot conceive of a personal God who would directly influence the actions of individuals, or would directly sit in judgment on creatures of his own creation. I cannot do this in spite of the fact that mechanistic causality has, to a certain extent, been placed in doubt by modern science. My religiosity consists in a humble admiration of the infinitely superior spirit that reveals itself in the little that we, with our weak and transitory understanding, can comprehend of reality. Morality is of the highest importance - but for us, not for God.

Mankind must give up war in the Atomic Era. What is at stake is the life or death of humanity.