When one teaches, two learn.

On two subjects the overwhelming majority of people regarded their own opinions as Absolute Truth, and sincerely believed that anyone who disagreed with them was immoral, outrageous, sinful, sacrilegious, offensive, intolerable, stupid, illogical, treasonable, actionable, against the public interest, ridiculous, and obscene. The two subjects were (of course) sex and religion.

My old man taught me two things: 'Mind own business' and 'Always cut cards.'

When he kisses you he isn't doing anything else. You're his whole universe, and the moment is eternal because he doesn't have any plans and isn't going anywhere. Just kissing you ... it's overwhelming.

The right to figure things out for yourself is the only true freedom everyone shares. Go use it.

But space travel can't ease the pressure on a planet grown too crowded not even with today's ships and probably not with any future ships-because stupid people won't leave the slopes of their home volcano even when it starts to smoke and rumble. What space travel does do is drain off the best brains: those smart enough to see a catastrophe before it happens, and with the guts to pay the price-abandon home, wealth, friends, relatives, everything-and go. That's a tiny fraction of one percent. But that's enough.

The marks won't listen if it's free.