You go up the mountaintop and all you're gonna get is a great big heavy stone tablet handed to you with a bunch of rules on it.

Mountains should be climbed with as little effort as possible and without desire. The reality of your own nature should determine the speed. If you become restless, speed up. If you become winded, slow down. You climb the mountain in an equilibrium between restlessness and exhaustion. Then, when you're no longer thinking ahead, each footstep isn't just a means to an end but a unique event in itself. To live only for some future goal is shallow. It's the sides of the mountains which sustain life, not the top.

The TV scientist who mutters sadly, "The experiment is a failure; we have failed to achieve what we had hoped for," is suffering mainly from a bad script writer. An experiment is never a failure solely because it fails to achieve predicted results. An experiment is a failure only when it also fails adequately to test the hypothesis in question, when the data it produces don't prove anything one way or another.

One geometry cannot be more true than another; it can only be more convenient. Geometry is not true, it is advantageous.

Art is anything you can do well. Anything you can do with quality.

I think metaphysics is good if it improves everyday life; otherwise forget it.

How are you going to teach virtue if you teach the relativity of all ethical ideas? Virtue, if it implies anything at all, implies an ethical absolute. A person whose idea of what is proper varies from day to day can be admired for his broadmindedness, but not for his virtue.