“It is not clear that intelligence has any long-term survival value.”

“Intelligence is the ability to adapt to change. ”

“Both observer and observed are parts of the world that has an objective existence, and any distinction between them has no meaningful significance. In other words, if you see a herd of zebras fighting for a spot in the parking garage, it is because there really is a herd of zebras fighting for a spot in the parking garage.”

“In his eyes shone the reflection of the most beautiful planet in the Universe---a planet that is not too hot and not too cold; that has liquid water on the surface and where the gravity is just right for human beings and the atmosphere is perfect for them to breathe; where there are mountains and deserts and oceans and islands and forests and trees and birds and plants and animals and insects and people---lots and lots of people. Where there is life. Some of it, possibly, intelligent.”

“I don't think the human race will survive the next thousand years, unless we spread into space.”

“We only have to look at ourselves to see how intelligent life might develop into something we wouldn’t want to meet,”

“Eternity is a long time, especially towards the end.”