Speak out in acts; the time for words has passed, and only deeds will suffice.

No one who achieves success does so without acknowledging the help of others. The wise and confident acknowledge this help with gratitude.

The art of progress is to preserve order amid change and to preserve change amid order.

If a dog jumps into your lap, it is because he is fond of you; but if a cat does the same thing, it is because your lap is warmer.

There are no whole truths: All truths are half-truths.

Not ignorance, but ignorance of ignorance, is the death of knowledge.

Religion is the last refuge of human savagery.

Philosophy begins in wonder. And, at the end, when philosophic thought has done its best, the wonder remains.

...the self-satisfied dogmatism with which mankind at each period of its history cherishes the delusion of the finality of existing modes of knowledge.

Knowledge shrinks as wisdom grows.

Symbolism is no mere idle fancy or corrupt degeneration: it is inherent in the very texture of human life.

I slide to my knees and say, "Please let this be over." Then, I'm not ready for it to be over.

We all have impossible dreams and we do what we can to pursue them.

I approach poetry and spirituality like literary nitroglycerin -- a little can do a lot and you better damn well be careful with it.

[On accepting travel suggestions from her two daughters, 6 and 3:] When they pay for the vacation, they get to dictate where we go.

God multiplies intelligence, which communicates itself, like fire, ad infinitum. Light a thousand torches at one touch, the flame remains always the same.

The leader is a teacher who succeeds without taking credit. And, because credit is not taken, credit is received.

It is impossible to carry everyone you know to your future! Most will remain in your past!

You do not have the right to take another human's life, unless it's in strict self-defense.

For healthy adult people, the really big thing we can foresee are ways of intervening in the ageing process, either by slowing or reversing it.

Being excited about stuff on a daily basis, I'm so excited by it.