Certainty? In this world nothing is certain but death and taxes.

Obsession is an attractive thing. People who are really, really interested and good at one thing and smart are attractive, if they're men.

After all, science is essentially international, and it is only through lack of the historical sense that national qualities have been attributed to it.

The more you like yourself, the less you are like anyone else, which makes you unique.

In the intellectual order, the virtue of humility is nothing more nor less than the power of attention.

Hope is like the sun, which, as we journey toward it, casts the shadow of our burden behind us.

What's with you men? Would hair stop growing on your chest if you asked directions somewhere?

You don't have to be the Dalai Lama to tell people that life's about change.

Experience without theory is blind, but theory without experience is mere intellectual play.

The English contribution to world cuisine - the chip.

The difficulty is to try and teach the multitude that something can be true and untrue at the same time.

When something is important enough, you do it even if the odds are not in your favor.

As we look ahead into the next century, leaders will be those who empower others.

Your personal nature seeks its paradise.

It is piracy, not overt online music stores, which is our main competitor.

Effective action is always unjust.

I've got a woman's ability to stick to a job and get on with it when everyone else walks off and leaves it.

We are all now connected by the Internet, like neurons in a giant brain.

The mind is a superb instrument if used rightly. Used wrongly, however, it becomes very destructive. To put it more accurately... you usually don't use it at all. It uses you.

The Declaration of Independence I always considered as a theatrical show. Jefferson ran away with all the stage effect of that... and all the glory of it.

Everything is vague to a degree you do not realize till you have tried to make it precise.