Any genuine philosophy leads to action and from action back again to wonder, to the enduring fact of mystery.

The man who looks for security, even in the mind, is like a man who would chop off his limbs in order to have artificial ones which will give him no pain or trouble.

No matter how vast, how total, the failure of man here on earth, the work of man will be resumed elsewhere. War leaders talk of resuming operations on this front and that, but man's front embraces the whole universe.

One's destination is never a place but rather a new way of looking at things.

I've had the joy of spending thousands of hours under the sea. I wish I could take people along to see what I see, and to know what I know.

You can give them the opportunity to thrive, but when it comes to finding happiness or success, kids are really on their own.

This country was founded upon the principle that we are all endowed with certain inalienable rights to Life, Liberty, and the Pursuit of Happiness - those rights are what make America great, and they belong to each and every one of us.

In my later years, I have looked in the mirror each day and found a happy person staring back. Occasionally I wonder why I can be so happy. The answer is that every day of my life I've worked only for myself and for the joy that comes from writing and creating. The image in my mirror is not optimistic, but the result of optimal behavior.