"I had started reading Marx and Lenin, but at that point I think Walt Whitman and Henry David Thoreau had more effect on me. What I responded to in my readings were emotional rather than theoretical questions. I was developing a hatred of the brutality of the existing economic system, a hatred of the impersonal degradation of human beings. That's what moved me as a teenager, and stayed with me."
January 1, 1970
https://en.wikiquote.org/wiki/Henry_David_Thoreau