I would say plotting is the most difficult thing for me. Characterization is only hard because sometimes I feel I get so interested in it that I want to talk too much about the characters and that slows the story down. So I say, "Hey, people want to find out what's going to happen next, they don't want to listen to you spout off about this or that person." But I think even the bad guy deserves to tell his side of the story.

I hold to no God," Roland said. "I hold to the Tower, and won't pray to that.

Perfect paranoia is perfect awareness.

...belief has a second edge. If there are ten thousand medieval peasants who create vampires by believing them real, there may be one - probably a child - who will imagine the stake necessary to kill it. But a stake is only stupid wood; the mind is the mallet which drives it home.

You know how it's going to end, but instead of spoiling things, that somehow increases your fascination. It's like watching a kid run his electric train faster and faster and waiting for it to derail on one of the curves.

I think everybody has experiences from time to time they can't explain. They are peculiarities. Usually we just dismiss them because they are uncomfortable to think about.

Remember that 'plumber in space' is not such a bad setup for a story.