The fundamental laws necessary for the mathematical treatment of a large part of physics and the whole of chemistry are thus completely known, and the difficulty lies only in the fact that application of these laws leads to equations that are too complex to be solved.

A great deal of my work is just playing with equations and seeing what they give.

Hopes are always accompanied by fears, and, in scientific research, the fears are liable to become dominant.

I should like to suggest to you that the cause of all the economic troubles is that we have an economic system which tries to maintain an equality of value between two things, which it would be better to recognise from the beginning as of unequal value.

Living is worthwhile if one can contribute in some small way to this endless chain of progress.

If we are honest - and scientists have to be - we must admit that religion is a jumble of false assertions, with no basis in reality.

The measure of greatness in a scientific idea is the extent to which it stimulates thought and opens up new lines of research.