"The animal-rights movement gives the lie to the trope that we are living in a postmodern world in which meaning is fragmented and values are relative. These advocates burn with an old-fashioned Enlightenment fervor -- an unhealthy zeal, critics believe -- in this quest to extend liberty to nonhuman beings. The ridicule that sometimes greets their cause is unlikely to deter it..."
Indeed: I stopped thinking of myself as an existentialist (mostly) as I became more committed to life as a pacifist and a (mostly vegan) vegetarian. I realized these deeply felt commitments did not match a worldview in which we create our own meaning and morality.