Experience is knowledge. All the rest is information.

I do not believe that a moral philosophy can ever be founded on a scientific basis. … The valuation of life and all its nobler expressions can only come out of the soul’s yearning toward its own destiny. Every attempt to reduce ethics to scientific formulas must fail. Of that I am perfectly convinced.

There comes a time when the mind takes a higher plane of knowledge but can never prove how it got there.

To have a better life we must keep choosing how we are living.

If we knew what it was we were doing, it would not be called research, would it?

Knowledge is realizing that the street is one way; wisdom is looking in both directions anyway.

Any fool can know. The point is to understand.