Science is the most reliable guide for civilization, for life, for success in the world. Searching a guide other than the science is meaning carelessness, ignorance and heresy.

Freedom would be not to choose between black and white but to abjure such prescribed choices.

Im not in this world to live up to your expectations and youre not in this world to live up to mine.

History repeats itself, first as tragedy, second as farce.

Life is a difficult game. You can win it only by retaining your birthright to be a person.

It is not the strongest of the species that survives, nor the most intelligent that survives. It is the one that is the most adaptable to change.

As far as we can discern, the sole purpose of human existence is to kindle a light of meaning in the darkness of mere being.

Love is like an hourglass, with the heart filling up as the brain empties

Your children are not your children. They are the sons and daughters of Life's longing for itself.

Style is knowing who you are, what you want to say, and not giving a damn

The love of life is necessary to the vigorous prosecution of any undertaking.

All good things which exist are the fruits of originality.

Any place I hang my head is home.

I've learned that even when I have pains, I don't have to be one.

How people treat you is their karma; how you react is yours.

If we are not free, no one will respect us.

The natural world is the greatest source of excitement. The greatest source of visual beauty. It is the greatest source of so much in life that makes life worth living.

Rudeness is the weak man's imitation of strength.

Humility is really important because it keeps you fresh and new.

The desire to fly is an idea handed down to us by our ancestors who... looked enviously on the birds soaring freely through space... on the infinite highway of the air

To forgive is not just to be altruistic.