For the learning of every virtue there is an appropriate discipline, and for the learning of suspended judgment the best discipline is philosophy.

Ants and savages put strangers to death.

Ordinary language is totally unsuited for expressing what physics really asserts, since the words of everyday life are not sufficiently abstract. Only mathematics and mathematical logic can say as little as the physicist means to say.

To fear love is to fear life, and those who fear life are already three parts dead.

The sentiments of an adult are compounded of a kernel of instinct surrounded by a vast husk of education.

Religions that teach brotherly love have been used as an excuse for persecution, and our profoundest scientific insight is made into a means of mass destruction.

The only thing that will redeem mankind is cooperation.