If I am getting it right, Schopenhauer believes that we are driven by our ego. The ego is where our desire for our own pleasure and happiness comes from. It has little to do with compassion and love, both of which we are more than capable of accessing and, in doing so, inoculating ourselves from what he and Freud labeled as "the hedgehog's dilemma."
Too often climate advocates stop at apocalypse. If we don't change everything now, or "yesterday," as one scientist said recently, we're toast. Or drowned. Or something, really, really bad. The problem with this kind of message, research has shown, is that most people basically tune out right about then.