Jobs took over. He simply came in and said, "I'm taking over Macintosh hardware; you can have software and publications." … And then a few months later Jobs said, "I'm taking over software; you can have publications." So I said, "You can have publications too," and left. That was in May of 1982. He and Markkula said, "Please don't leave. Give us another month and we'll make you an offer you can't refuse." So I gave Apple a month; they made me an offer, and I refused.

Programmers At Work (1986)