"Consciousness is of paramount importance to all of us. By definition it is the universe of our awareness. On the assumption that many other species are conscious or sentient I have suggested that our morality is based upon a concern for all sentients-which I have called sentientism, although I could equally have called it consciousism (but that is even more horrible as a word!). Pain and pleasure are the two great poles of consciousness, between which all sentients swing ... ."