Creativity is intelligence having fun.

The horizon of many people is a circle with a radius of zero. They call this their point of view.

Adversity introduces a man to himself.

Those instrumental goods which should serve to maintain the life and health of all human beings should be produced by the least possible labour of all.

I hate all the loathsome nonsense that goes with patriotism.

Whether or not you can observe a thing depends upon the theory you use. It is the theory which decides what can be observed.

The human spirit must prevail over technology.