There have only been about a half dozen genuinely important events in the four-billion-year saga of life on Earth: single-celled life, multicelled life, differentiation into plants and animals, movement of animals from water to land, and the advent of mammals and consciousness.

The balloons only have one life and the only way of finding out whether they work is to attempt to fly around the world.

At the age of 31, I realized, 'Oh my God, I may die like everyone else.'

Man is free at the moment he wishes to be.

A friendship founded on business is better than a business founded on friendship.