I shall reconsider human knowledge by starting from the fact that we can know more than we can tell.

We know more than we can tell.

The process of philosophic and scientific enlightenment has shaken the stability of beliefs held explicitly as articles of faith.

We could not, for example, arrive at a principle like that of entropy without introducing some additional principle, such as randomness, to this topography.

The information in DNA could no more be reduced to the chemical than could the ideas in a book be reduced to the ink and paper: something beyond physics and chemistry encoded DNA.

Discoveries are made by pursuing possibilities suggested by existing knowledge.

Theories of evolution must provide for the creative acts which brought such theories into existence.

And the actual achievements of biology are explanations in terms of mechanisms founded on physics and chemistry, which is not the same thing as explanations in terms of physics and chemistry.

But even physics cannot be defined from an atomic topography.

Human beings exercise responsibilities within a social setting and a framework of obligations which transcend the principle of intelligence.

Personal participation is the universal principle of knowing.

Alec looked at her and shook his head. "How do you manage never to get mud on your clothes?"Isabelle shrugged philosophically. "I'm pure at heart. It repels the dirt.

The Spirit goes ahead of us when we witness--- preparing the way, giving us the words, and granting us courage.

When I think of our condition, my heart is heavy. I see men of my own race treated as outlaws and driven from country to country, or shot down like animals.

When you are willing to make sacrifices for a great cause, you will never be alone.

I mistake the American people if they favor the odious doctrine that there is no such thing as international morality; that there is one law for a strong nation and another for a weak one.

It is strange to reflect how much energy is thrown away in attempting to know the unknowable.

When I go to Afghanistan, I realize I've been spared, due to a random genetic lottery, by being born to people who had the means to get out. Every time I go to Afghanistan I am haunted by that.

You can't lose. Go, go, go!

Great work requires great and persistent effort for a long time. ... Character has to be established through a thousand stumbles.

When you've got nowhere to turn, turn on the gas.