How much change can a person absorb before everything loses meaning Living for its own sake isn't life. People need meaning as much as they need air.

Memories fade but words hang around forever.

It is not enough to live together in peace, with one race on its knees.

I will murder you by the billions to give you immortality. I will set fire to your civilization to light your way forward. But know this: My species is not defined by your dying, but by your living.

Imagination is the dynamic catalyst for every breakthrough.

And I'll be a witch in hell before I let someone hurt my dogs.

Your needs are overwhelming? You can’t depend on yourself or others to meet them? You don’t even know what they are? Then need nothing.

There are two kinds of people in this world. The kind who divide the world into two kinds of people and those who don't.

However much your life may have become an expression of creativity, of generosity of spirit, there's always the further possibility of more or just expressing it in different ways.

The school of life offers some difficult courses, but it is in the difficult class that one learns the most.

I clean my own utensils, my house and I even travel alone. I don't know what the life of a superstar is like.

Our differences are our strength as a species and as a world community.

What we know about the global financial crisis is that we don't know very much.

We're philosophers. We think, therefore we am.