Our ancestors lived out of doors. They were as familiar with the night sky as most of us are with our favorite television programs.

The method of science, as stodgy and grumpy as it may seem, is far more important than the findings of science.

Valid criticism does you a favor.

We invest far off places with a certain romance... Long summers, mild winters, rich harvests, plentiful game; none of them lasts for ever. Your own life, or your bands, or even your species - might be owed to a restless few, drawn by a craving they can hardly articulate or understand, to undiscovered lands, and new worlds.

We can make a similar examination, but with greater uncertainty, of the extraterrestrial hypothesis that holds that a wide range of UFOs viewed on the planet Earth are space vehicles from planets of other stars.

Clutching our crystals and religiously consulting our horoscopes, our critical faculties in steep decline, unable to distinguish between what's true and what feels good, we slide, almost without noticing, into superstition and darkness.

Except for fools and madmen, everyone knows that nuclear war would he an unprecedented human catastrophe.