"As I see it, Greenberg and I are simply playing different games and the contrast in our approaches reflects that basic difference. … I play one game and am intrigued by the other but I do keep wondering whether that other game has any rules or whether a computerized robot might not be rather better at it all. But long live both games!"

"Despite our grandiose ideas and our lofty self-conceits, we are still humble animals, subject to all the basic laws of animal behaviour. Long before our populations reach the levels envisaged above we…"

"Cook was a giant of the sea. To deprive him, his scientists and his crew of high praise would be mean-spirited and would mock history. He was almost certainly the first European to sail along and repo…"

"But, whatever be the constitution, great care must be taken to provide a mode of amendment, when experience or change of circumstances shall have manifested that any part of it is unadapted to the goo…"

"More than any other time in history, mankind faces a crossroads. One path leads to despair and utter hopelessness. The other, to total extinction. Let us pray we have the wisdom to choose correctly."