One distinctive thing about Zimmerman’s personal story is the fact that he chose to live his life as a full time ‘troublemaker’ (committed leftwing activist), abandoning his extremely promising career as a creative and recognized scientist. He got his PhD in psychology at the University of Chicago in 1967, based on path breaking research on brain function in sleep, and gave up his academic career even though he had every expectation of continuing achievement. Why and how he made this life change reveals a lot about the society of that time—and now—so I hope we can delve into this dimension of his experience.