The part of my writing I find the most rewarding is when people write to me or speak to me in public to tell me how his or her life has been changed by my books.
The thing that made Groucho special was the way he used his body parts. He also had a wicked tongue. People didn't realize it, but when Groucho said something, he meant it.
There's this sense of excitement because you invent and control the characters. You decide whether they live or die. I find this type of creative process tremendously stimulating.
Usually, when people get to the end of a chapter, they close the book and go to sleep. I deliberately write a book so when the reader gets to the end of the chapter, he or she must turn one more page.