[The 1975 Chase Econometrics] showed that for every one dollar spent on Apollo, 14 came back into the U.S. economy.

Science is about exploring, and the only way to uncover the secrets of the universe is to go and look.

Look at that! If you ever needed convincing that we live in the solar system, that we are on a ball of rock, orbiting around the Sun with other balls of rock, then look at that! That's the solar system coming down and grabbing you by the throat.

We are the cosmos made conscious and life is the means by which the universe understands itself.

At every stage of understanding the universe better, the benefits to civilisation have been immeasurable. None of those big leaps were made with us knowing what was going to happen.

Every carbon atom in every living thing on the planet was produced in the heart of a dying star.

As we get older, things seem less important.