But he knew well enough that any man in the right circumstances could be dehumanised by panic.

As his body became more and more defenseless, so his means of offense became steadily more frightful.

I don't pretend we have all the answers. But the questions are certainly worth thinking about.

It was the mark of a barbarian to destroy something one could not understand.

All human plans [are] subject to ruthless revision by Nature, or Fate, or whatever one preferred to call the powers behind the Universe.

The limits of the possible can only be defined by going beyond them into the impossible.

In fact, one of the arguments for searching for intelligent life in space, elsewhere, is that we have no evidence that intelligence has any survival value. The most successful creatures on this planet are the cockroaches. They've been around, what is it, 100 million years or so and I suspect they'll still be there 100 million years in the future. Maybe intelligence is an evolutionary aberration which dooms its possessors in the way armor may have doomed some of the dinosaurs.