I'm a long-term optimist, and I don't think the problems with our society are from being overly optimistic.

The real world is far too complex and unpredictable to make something like the idea of humanity controlling its own evolution or engineering itself - well, I wouldn't say impossible but it should be approached with a degree of caution.

What if capitalism is unsustainable, and socialism is impossible?

I'm a long-term optimist, and I don't think the problems with our society are from being overly optimistic.

The secret of becoming a writer is to write, write and keep on writing.

The world has become one big grassy knoll, crawling with lone gunmen who think they're the Warren Commission.

Of all the sciences, astronomy was the one the superstitious liked least.