We follow the scientists around and look over their shoulders. They're watching their feet: provable mistakes are bad for them. We're looking as far … - Larry Niven

The difference between a good man and a bad one is the choice of cause.

I have a kind of psychic invisibility. As long as I can stay scared, I can keep people from seeing me. That's what we have to count on.

Perhaps the lines of nationalism and factionalism and every other goddamn “ism” in the world had reduced the chances for this weary planet. Or not. Nuclear devices had existed for over a century, and only four of them had ever been used in anger. This could be interpreted as proof of divine intervention, good luck, a sign that the human race was growing up, or ominous portent, depending upon one’s standing in the “half-empty, half-full” school of cocktail-party philosophy.