I'm no shrinking violet. I played hockey until half my teeth were knocked down my throat. And I'm extremely competitive on a tennis court. . . But that experience at the slaughterhouse overwhelmed me. When I walked out of there, I knew I would never again harm an animal! I knew all the physiological, economic, and ecological arguments supporting vegetarianism, but it was firsthand experience of man's cruelty to animals that laid the real groundwork for my commitment to vegetarianism.
Peter Burwash, John Tullius (1983). “Peter Burwash's Vegetarian Primer”, Atheneum Books