Exceptional claims demand exceptional evidence.

Have no fear of perfection - you'll never reach it.

All my life I have tried to pluck a thistle and plant a flower wherever the flower would grow in thought and mind.

Short as life is, we make it still shorter by the careless waste of time.

Don't part with your illusions. When they are gone you may still exist, but you have ceased to live.

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

I am not young enough to know everything.

To live is to be musical, starting with the blood dancing in your veins. Everything living has a rhythm. Do you feel your music?

I am convinced we do not only love ourselves in others but hate ourselves in others too.

A man who dares to waste one hour of time has not discovered the value of life.

Live as if you were living a second time, and as though you had acted wrongly the first time.

We can never judge the lives of others, because each person knows only their own pain and renunciation. It's one thing to feel that you are on the right path, but it's another to think that yours is the only path.

You can have it all. Just not all at once.

We can allow satellites, planets, suns, universe, nay whole systems of universes, to be governed by laws, but the smallest insect, we wish to be created at once by special act.

We were all at once terribly alone; and alone we must see it through.

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

The nicest thing for me is sleep, then at least I can dream.

I would rather live in a world where my life is surrounded by mystery than live in a world so small that my mind could comprehend it.

If one's different, one's bound to be lonely.

Time is the best killer.

Nothing exists except atoms and empty space; everything else is opinion.