Desire for approval and recognition is a healthy motive, but the desire to be acknowledged as better, stronger, or more intelligent than a fellow being or fellow scholar easily leads to an excessively egoistic psychological adjustment, which may become injurious for the individual and for the community.

Everything you can imagine, nature has already created.

Conscious man, to be sure, has at all times been keenly aware that life is an adventure, that life must, forever, be wrested from death.

We must begin to inculcate our children against militarism by educating them in the spirit of pacifism. Our schoolbooks glorify war and conceal it's horror. I would teach peace rather than war.

The important thing is to never stop questioning. Never lose a holy curiosity.

Don't be too hard on me. Everyone has to sacrifice at the altar of stupidity from time to time.

In matters of truth and justice, there is no difference between large and small problems, for issues concerning the treatment of people are all the same.