What is it precisely, that they are doing when they are doing science. Are they refining their instruments for observation or discovering new aspects of reality?

We need science. We need empirical evidence. We can't just use mathematical reasoning to deduce the nature of the world.

Philosophical thinking that doesn't do violence to one's settled mind is no philosophical thinking at all.

It's very important to remember that the philosophers were social dissidents. They were social critics. The man in the street or woman in the street did not particularly cherish what they said. Socrates was killed.

When we call a philosopher distinguished, we are not saying that she is worthy and not saying that she is recognized, but we are saying that she occupies the intersection of both - that she is recognized and worthy; even that she is recognized because she's worthy.

A child's natural form of behavior is play, and in our aim to educate, play should be honored and preserved for as long past childhood as can be.

When the first people started to argue against slavery, for example, this was a new idea. If you crowd-source, you'd never come up with this. And so the - exactly the kind of progress we've made couldn't be made if we depend it on crowd-sourcing.