Mathematics deals exclusively with the relations of concepts to each other without consideration of their relation to experience.

This is a time, when there seems to be a particular need for friends of wisdom and truth to join together.

The conscientious objector is a revoultionary. On deciding to disobey the law he sacrifices his personal interests to the most important cause of working for the betterment of society.

It's very depressing to live in a time where it's easier to break an atom than a prejudice.

The problems that exist in this world can not be solved by the level of thinking that created them.

There is not the slightest indication that nuclear energy will ever be obtainable. It would mean that the atom would have to be shattered at will.

I have never belonged wholeheartedly to country or State, to my circle of friends or even to my own family... Such isolation is sometimes bitter, but I do not regret being cut off from the understanding and sympathy of other men. I lose something by it,to be sure, but I am compensated for it in being rendered independent of the customs, opinions and prejudices of others, and am not tempted to rest my peace of mind upon such shifting foundations.