I think there's every reason this 21st century will be much happier.

Death means change our clothes. Clothes become old, then time to come change. So this body become old, and then time come, take young body.

First was the mouse. The second was the click wheel. And now, we're going to bring multi-touch to the market. And each of these revolutionary interfaces has made possible a revolutionary product - the Mac, the iPod and now the iPhone.

We need to find God, and he cannot be found in noise and restlessness. God is the friend of silence. See how nature - trees, flowers, grass- grows in silence; see the stars, the moon and the sun, how they move in silence... We need silence to be able to touch souls.

With fools, there is no companionship. Rather than to live with men who are selfish, vain, quarrelsome, and obstinate, let a man walk alone.

I think there's every reason this 21st century will be much happier.

If we knew what it was we were doing, it would not be called research, would it?

That's been one of my mantras - focus and simplicity. Simple can be harder than complex: You have to work hard to get your thinking clean to make it simple. But it's worth it in the end because once you get there, you can move mountains.

Nothing so conclusively proves a man's ability to lead others as what he does from day to day to lead himself.  

Discontent is the first necessity of progress.

No part of the education of a politician is more indispensable than the fighting of elections. 

Only a life lived for others is a life worthwhile.