No man is so good as to be free from all evil, nor so bad as to be worth nothing.

Nobody smart knows what they want to do until they get into their twenties or thirties.

Science can't tell you why anything happens.

The experience of climbing Kilimanjaro affected me so powerfully that, for a long time afterward, if I caught myself saying, "I'm not a person who likes to do that activity, eat that food, listen to that music," I would automatically go out and do what I imagined I didn't like. Generally I found I was wrong about myself - I liked what I thought I wouldn't like. And even if I didn't like the particular experience, I learned I liked having new experiences.

When I get sick, I go to my doctor like everyone else. A doctor has powerful tools that may help me. Or those tools may hurt me, make me worse. I have to decide. It's my life. It's my responsibility.

Real life isn't a series of interconnected events occurring one after another - like beads strung on a necklace. Life is actually a series of encounters in which one event may change those that follow in a wholly unpredictable, even devastating way.

People were so naive about plants, Ellie thought. They just chose plants for appearance, as they would choose a picture for the wall. It never occurred to them that plants were actually living things, busily performing all the living functions of respiration, ingestion, excretion, reproduction---and defense.