What's normal is for things to work. What's not normal is for things to fail.

If you can’t discover what’s keeping you in, the will to get out soon becomes confused and ineffectual - "Ishmael

Everyone in your culture knows this. Man was born to turn the world into paradise, but tragically he was born flawed. And so his paradise has always been spoiled by stupidty, greed, destructiveness, and shortsightedness.

Thinkers aren't limited by what they know, because they can always increase what they know. Rather they're limited by what puzzles them, because there's no way to become curious about something that doesn't puzzle you.

When you send off a short story, it sits on the editor's desk in the same pile with stories by the most famous and honored names in present-day writing-and it's not going to be accepted unless it's as good as theirs. (And it'll probably have to be better.)

Diversity is a survival factor for the community itself. A community of a hundred million species can survive anything short of total global catastrophe. Within that hundred million will be thousands that could survive a global temperature drop of twenty degrees—which would be a lot more devastating than it sounds. Within that hundred million will be thousands that could survive a global temperature rise of twenty degrees. But a community of a hundred species or a thousand species has almost no survival value at all.

[I]n Africa I was a member of a family—of a sort of family that the people of your culture haven't known for thousands of years. If gorillas were capable of such an expression, they would tell you that their family is like a hand, of which they are the fingers. They are fully aware of being a family but are very little aware of being individuals. Here in the zoo there were other gorillas—but there was no family. Five severed fingers do not make a hand.