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.

Scientific research can reduce superstition by encouraging people to think and view things in terms of cause and effect.

Science will stagnate if it is made to serve practical goals.

I do not share the crusading spirit of the professional atheist whose fervor is mostly due to a painful act of liberation from the fetters of religious indoctrination received in youth. I prefer an attitude of humility corresponding to the weakness of our intellectual understanding of nature and of our own being.

This is a question too difficult for a mathematician. It should be asked of a philosopher"(when asked about completing his income tax form)

There is only one road to human greatness: through the school of hard knocks.

The field is the sole influence of the particle.