Ideas have consequences, and totally erroneous ideas are likely to have destructive consequences.

Sometimes things which at the moment may be perceived as obstacles-and actually be obstacles, difficulties, or drawbacks-can in the long run result in some good end which would not have occurred if it had not been for the obstacle.

I'm all for sex. Seven nights a week. Days, too.

Laughter would appear to be a physical reflex, although even if it is, this still leaves unanswered the question of why the human response to humor is a convulsive spasm of the respiratory mechanism rather than a crossing of the eyes or a waving of the arms.

Impartial observers from other planets would consider ours an utterly bizarre enclave if it were populated by birds, defined as flying animals, that nevertheless rarely or never actually flew. They would also be perplexed if they encountered in our seas, lakes, rivers, and ponds, creatures defined as swimmers that never did any swimming. But they would be even more surprised to encounter a species defined as a thinking animal if, in fact, the creature very rarely indulged in actual thinking.

Dark energy is perhaps the biggest mystery in physics.

Humor is a social lubricant that helps us get over some of the bad spots.