Philosophy, like speaking prose, is something have to do all our lives, well or badly, whether we notice it or not. - Mary Midgley

Do we find ourselves a species naturally free from conflict? We do not. There has not, apparently, been in our evolution a kind of rationalization which might seem a possible solution to problems of conflict--namely, a takeover by some major motive, such as the desire for future pleasure, which would automatically rule out all competing desires. Instead, what has developed is our intelligence. And this in some ways makes matters worse, since it shows us many desirable things that we would not otherwise have thought of, as well as the quite sufficient number we knew about for a start. In compensation, however, it does help us to arbitrate. Rules and principles, standards and ideals emerge as part of a priority system by which we guide ourselves through the jungle. They never make the job easy--desires that we put low on our priority system do not merely vanish--but they make it possible. And it is in working out these concepts more fully, in trying to extend their usefulness, that moral philosophy begins. Were there no conflict, it [moral philosophy] could never have arisen.

Consideration of motives brings up the matter of free will. I had better say once, that my project of taking animal comparisons seriously does not involve a slick mechanistic or deterministic view of freedom. Animals are not machines; one of my main concerns is to combat this notion. Actually only machines are machines.

About all these things physics can tell us nothing. The idea of natural selection, which, as we shall see, is uaully called in to account for this vast creative surge, is already looking increasingly inadequate to explain evolution. The main trouble is, I think, best explained in the analogy of coffee. Natural selection is only a filter, and filters do not provide the taste of coffee that pours through them. Similarly, the range of evolutionary alternatives between which selection takes place has to be already in matter. How it comes to be present there is the real mystery about creation.