In all the universe there is nothing more precious than mind.

We stand now at the turning point between two eras. Behind us is a past to which we can never return...

In the long run, there are no secrets. in science. The universe will not cooperate in a cover-up.

There is hopeful symbolism in the fact that flags do not wave in a vacuum.

The West needs to relearn what the rest of the world has never forgotten - that there is nothing sinful in leisure as long as it does not degenerate into mere sloth.

Moses Kaldor had always loved mountains; they made him feel nearer to the God whose nonexistence he still sometimes resented.

The crossing of space ... may do much to turn men's minds outwards and away from their present tribal squabbles. In this sense, the rocket, far from being one of the destroyers of civilisation, may provide the safety-value that is needed to preserve it.