Let us understand Darwinism so we can walk in the opposite direction when it comes to setting up society.

A retaliator behaves like a hawk when he is attacked by a hawk, and like a dove when he meets a dove. When he meets another retaliator he plays like a dove. A retaliator is a conditional strategist. His behaviour depends on the behaviour of his opponent.

The psychologist Elizabeth Loftus has shown great courage, in the face of spiteful vested interests, in demonstrating how easy it is for people to concoct memories that are entirely false but which seem, to the victim, every bit as real as true memories.

The genetic code is not a binary code as in computers, nor an eight-level code as in some telephone systems, but a quaternary code with four symbols. The machine code of the genes is uncannily computerlike.

I think Douglas [Adams] is writing with an eye to irony for adults at the same time as entertaining children.

I've seen [Lalla Ward] episodes of "Doctor Who." They're good, at least partly because the scripts were written by Douglas Adams.

It would be intolerant if I advocated the banning of religion, but of course I never have.