Strive not to be a success, but rather to be of value.

I have just got a new theory of eternity.

I want to go when I want. It is tasteless to prolong life artificially. I have done my share, it is time to go. I will do it elegantly.

The world is in greater peril from those who tolerate or encourage evil than from those who actually commit it.

It may be possible to fight intolerance, stupidity, and fanaticism seperately, but when they come together there is no hope.

No one must think that Newton’s great creation can be overthrown in any real sense by this [Theory of Relativity] or by any other theory. His clear and wide ideas will for ever retain their significance as the foundation on which our modern conceptions of physics have been built.

Music has no effect on research work, but both are born of the same source and complement each other through the satisfaction they bestow