The failure to think positively can weigh on a cancer patient like a second disease.

Heads of state are notoriously ill prepared for their mature careers; think of Adolf Hitler (landscape painter), Ho Chi Minh (seaman), and our own Ronald Reagan.

Feminists have not tried to "destroy the family". We just thought the family was such a good idea that men might want to get involved in it too.

In sci-fi convention, life-forms that hadn't developed space travel were mere prehistory -- horse-shoe crabs of the cosmic scene -- and something of the humiliation of being stuck on a provincial planet in a galactic backwater has stayed with me ever since.

An asteroid could hit us at any moment. This is not - and also, the most successful kind of life on this planet is not us, it's microbes. They're the ones who greatly outnumber us, and may eventually destroy us.

In a process that had begun in the 1980s and suddenly accelerated in the early 2000s ... [t]he peaks of great wealth grew higher, rising up beyond the clouds, while the valleys of poverty sank lower into perpetual shadow. The once broad plateau of the middle class eroded away into a narrow ledge, with the white-knuckled occupants holding on for dear life.

Racist, sexist, and homophobic thoughts cannot, alas, be abolished by fiat but only by the time-honored methods of persuasion, education and exposure to the other guy's-or excuse me, woman's-point of view.