We are an intelligent species and the use of our intelligence quite properly gives us pleasure. In this respect the brain is like a muscle. When we think well, we feel good. Understanding is a kind of ecstasy.

There are lots of ways to communicate what we know, but few ways to communicate what we feel. Music is one way to communicate emotions.

The universe forces those who live in it to understand it.

It's hard to kill a creature once it lets you see its consciousness.

Observation: I can't see a thing. Conclusion: Dinosaurs.

The uniqueness of humans has been claimed on many grounds, but most often because of our tool-making, culture, language, reason and morality. We have them, the other animals don't, and -- so the argument goes -- that's that.

In a complex universe, in a society undergoing unprecedented change, how can we find the truth if we are not willing to question everything and to give a fair hearing to everything?