Robert Maynard Pirsig is an American writer and philosopher, and author of the philosophical novels Zen and the Art of Motorcycle Maintenance: An Inquiry into Values and Lila: An Inquiry into Morals.
The hippies had in mind something that they wanted, and were calling it "freedom," but in the final analysis "freedom" is a purely negative goal. It just says something is bad. Hippies weren't really offering any alternatives other than colorful short-term ones, and some of these were looking more and more like pure degeneracy. Degeneracy can be fun but it's hard to keep up as a serious lifetime occupation.