Any sufficiently advanced technology is indistinguishable from magic.
The only way to define your limits is by going beyond them.
I’m sure the universe is full of intelligent life. It’s just been too intelligent to come here.
If man can live in Manhattan, he can live anywhere.
The realisation that our small planet is only one of many worlds gives mankind the perspective it needs to realise sooner that our own world belongs to all its creatures.
The difference between machines and human beings is that human beings can be reproduced by unskilled labour.
Behind every man now alive stand thirty ghosts, for that is the ratio by which the dead outnumber the living.
The West needs to relearn what the rest of the world has never forgotten – that there is nothing sinful in leisure as long as it does not degenerate into mere sloth.
I’ve been saying for a long time that I’m hoping to find intelligent life in Washington.
If there are any gods whose chief concern is man, they can’t be very important gods.
There is a special sadness in achievement, in the knowledge that a long-desired goal has been attained at last, and that life must now be shaped toward new ends.
Few artists thrive in solitude and nothing is more stimulating than the conflict of minds with similar interests.