The truth of a theory can never be proven, for one never knows if future experience will contradict its conclusions.

The distinction between the past, present and future is only a stubbornly persistent illusion.

The greatest activity of which man is capable: Opening up yet another fragment of the frontier of beauty.

The world is not threatened by evil people, but by those who allow evil to take place.

Put your hand on a hot stove for a minute and it seems like an hour. Sit with a pretty girl for an hour, and it seems like a minute.

Our task is to widen our circle of compassion to include all living beings and all of nature

It is the theory which decides what we can observe