"In a movie, you need good actors, whereas in a book, you don't, unless you have a really bad imagination. In a book, your imagination will do the acting for you. Also, the process of revelation is often different. Tension is achieved in a different way."

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I shift between mediums very frequently. Instead of taking a break from writing, I just write in a different medium or in a different way or for a different purpose, so that I don't actually stop writing - I just go to something else. Like going from a big symphony to a piano piece is great and very refreshing, I find. And then going from that to a big concerto, and then having to go out and play.

— Philip Glass