True genius can be identified by the fact that its expression changes the world into something it has never been before.

The human race never solves any of its problems, it only outlives them.

It's almost always dangerous to be right too soon.

To say that a writer's hold on reality is tenuous is an understatement-it's like saying the Titanic had a rough crossing. Writer's build their own realities, move into them and occasionally send letters home. The only difference between a writer and a crazy person is that a writer gets paid for it.

Life is hard. Then you die. Then they throw dirt in your face. Then the worms eat you. Be grateful it happens in that order.

My approach to 'Star Trek' was, 'I know science fiction, and I know screen writing.' That was very arrogant of me, but you really need to be a little bit arrogant to think that what you have to say is good enough to justify the expense of hundreds of thousands - now millions of dollars - to make an episode of the TV show.

When I was a kid, my favorite movies were the George Pal version of 'War Of The Worlds,' 'Them,' and 'Invasion of the Body Snatchers.' Those movies were scary! They haunted my nightmares for years, so when I started writing, I wanted to write a story that was just as big and just as scary.