Mathematicians seem to have no difficulty in creating new concepts faster than the old ones become well understood.

When a butterfly flutters its wings in one part of the world, it can eventually cause a hurricane in another.

It took me too long to realise that if you go to a marriage counsellor to resolve problems, it's in his interest to keep the marriage going.

A book sometimes seems to impose a through-line to life that real life doesn't actually have.

When you place a high value on truth, you have to think for yourself.

I'm too tired to speak in English.

Moore's Law of Mad Science: Every eighteen months, the minimum IQ necessary to destroy the world drops by one point.

Eating outdoors makes for good health and long life and good temper, everyone knows that.

There is no differentiation between all living things: trees, river, animals, and humans.

You cannot have a theory without principles. Principles is another name for prejudices.

The GNU GPL was not designed to be "open source".

The world is full of horror. Our imaginations struggle to keep up. It would be a poor life without imagining. I’m not sure we can have any salvation, in fact, without imagining.