Heroism on command, senseless violence, and all the loathsome nonsense that goes by the name of patriotism - how passionately I hate them!

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

We [Jews] have no other means of self-defense than our solidarity

Once you stop learning, you start dying

In quitting this strange world he has once again preceded me by a little. That doesn't mean anything. For those of us who believe in physics, this separation between past, present, and future is only an illusion, however tenacious.

Condemnation without investigation is the height of ignorance

Rejoice with your family in the beautiful land of life.