Dark energy is perhaps the biggest mystery in physics.

To those who wish to punish others -- or at least to see them punished, if the avengers are too cowardly to take matters in to their own hands -- the belief in a fiery, hideous hell appears to be a great source of comfort.

Civilization itself . . . can easily be swept aside when mob passions are aroused.

There are hundreds of millions who believe the Messiah has come. If he did, then it is unfortunately the case that his heroic sacrifice and death have had no effect whatsoever on the very problem his coming might have been expected to address, for history demonstrates, beyond question, that we Christians have been just as dangerous, singly and en masse, as non-Christians.

One of the nice things about problems is that a good many of them do not exist except in our imaginations.

Physical fitness is in. I recently had a physical fit myself.

Radio is the theater of the mind; television is the theater of the mindless.