Every day is Christmas Day to a dog.

And the lesson was this; sit in the sun, head down, within a prickly vine, in a flickery light, or open light, and the world will come to you. The sky will come in its time, bringing rain, and the earth will rise through you, from beneath, and make you rich and make you full.

An athlete may run ten thousand miles in order to prepare for one hundred yards. Quantity gives experience.

We cannot tell the precise moment when friendship is formed. As in filling a vessel drop by drop, there is at last a drop which makes it run over; so in a series of kindnesses there is at last one which makes the heart run over.

Ask no guarantees, ask for no security, there never was such an animal. And if there was it would be related to the great sloth which hangs upside down in a tree all day every day, sleeping its life away.

The great thing about my life is that everything I've done is a result of what I was when I was 12 or 13.

Mars is empty now. Five hundred years from now, it'll be full of people.