Smoke like a chimney, work like a horse, eat without thinking, go for a walk only in really pleasant company.

I am convinced there is only one way to eliminate these grave evils, namely through the establishment of a socialist economy, accompanied by an educational system which would be oriented toward social goals.

A theory is the more impressive the greater the simplicity of its premises is, the more different kinds of things it relates, and the more extended is its area of applicability. Therefore the deep impression which classical thermodynamics made upon me. It is the only physical theory of universal content concerning which I am convinced that within the framework of the applicability of its basic concepts, it will never be overthrown.

Mere praise of peace is easy and ineffective. What is needed is acitve participation in the fight against war and everything which leads to it.

Not all things worth counting are countable and not all things that count are worth counting.

Man usually avoids attributing cleverness to somebody else unless it is an enemy.

The stupid are invincible.