A wonderful area for speculative academic work is the unknowable. These days religious subjects are in disfavor, but there are still plenty of good topics. The nature of consciousness, the workings of the brain, the origin of aggression, the origin of language, the origin of life on earth, SETI and life on other worlds...this is all great stuff. Wonderful stuff. You can argue it interminably. But it can't be contradicted, because nobody knows the answer to any of these topics.

The purpose of life is to stay alive. Watch any animal in nature--all it tries to do is stay alive. It doesn't care about beliefs or philosophy. Whenever any animal's behavior puts it out of touch with the realities of its existence, it becomes exinct.

That's human nature. Nobody does anything until it's too late.

Yes, you have cancer. Yes, your kids are on drugs. Yes, there is an elephant outside your tent. Now the question becomes, What are you going to do about it? Subsequent emotions may not be pleasant, but the hysteria stops. Hysteria accompanies an unwillingness to look at what is really going on; it promotes an unwillingness to look. We feel we are afraid to look, when actually it is not-looking that makes us afraid. The minute we look, we cease being afraid.

Exercise invigorates the body and sharpens the mind.

The greatest scientists in history are great precisely because they broke with the consensus. There is no such thing as consensus science. If it's consensus, it isn't science. If it's science, it isn't consensus. Period.

We are all assumed, these days, to reside at one extreme of the opinion spectrum, or another. We are pro-abortion or anti-abortion. We are free traders or protectionists. We are pro-private sector or pro-government. We are feminists or chauvinists. But in the real world, few of us hold these extreme views. There is instead a spectrum of opinion.