Without "ethical culture", there is no salvation for humanity.

When you are courting a nice girl an hour seems like a second. When you sit on a red-hot cinder a second seems like an hour. That's relativity.

For me the Jewish religion like all other religions is an incarnation of the most childish superstitions.

The American lives even more for his goals, for the future, than the European. Life for him is always becoming, never being.

It is every man's obligation to put back into the world at least the equivalent of what he takes out of it.

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.

I must seem like an ostrich who forever burries its head in the relativistic sands in order not to face the evil quanta.