You can show a dozen guys murderin’ each other on TV but you can’t ever show two people making love. The naked blade is reckoned to be less obscene t… - Spider Robinson

A naked blade is reckoned to be less obscene than a naked woman.

Hey,” Arethusa said from my right, just past Sally. “What’s wrong with pacifists? Look at Buddhists: they’re nice people.” I gave her my best smile, and got a much better one in trade. Arethusa can smile like a long-distance kiss. I poured her two plastic cups of peach juice from the flask on my bedside table. Lady Sally started to adjust her chair so she could see us both… then left it as it was and spoke past me, to Arethusa’s other body, which opened its eyes politely. “They’re different,” Lady Sally conceded. “They’re honest pacifists. You don’t have to worry about them fighting dirty, because they never fight: they don’t have Jihads or Crusades. The strongest weapon they use is reason; the strongest protest they allow themselves is suicide, and they’re always careful not to let the flames spread. Pacifism of that sort is no more objectionable than belief in astrology or membership in the Flat Earth Society. I was speaking of the kind of pacifists we grew like hothouse flowers in this country fifteen or twenty years ago, and still have all too many of. Pacifist terrorists. The kind who want all wars everywhere to cease and everyone to live in peace… and are prepared to keep blowing up wealthier and less enlightened fellow citizens until that day comes. There’s nothing wrong with wanting wars to stop — but the moment a pacifist uses any weapon but calm speech, he’s a hypocrite. If he’s willing to kill, he’s a psychotic. The only good thing about them as opponents is that it isn’t murder to kill one.

I think of us as a people who inoculate ourselves against a plague of insanity with a powerful anti-idiotic called science fiction. I think sf is a literature which by its very nature requires that you be at least a little sane, that you know at least a little something. You must abdicate the right to be ignorant in order to enjoy science fiction, which most people are unwilling to do; and you must learn, if not actually how to think things through, at least what the trick looks like when it's done. Frequent injections will keep a lot of madness away.

The prime datum of the Universe is that life survives by eating life, and no other way. The expense of eating is, in great part, the resistance the second life offers to being eaten.