||"Where have we come from? Who are we? Where are we going?" The goal of studying philosophy of biology is to answer these questions. So anyone interested in such questions needs to understand both the theories and the structure of this subject. Most biologists agree that evolution is driven by natural selection, but there also exists a vocal and growing group of creationists and intelligent-design theorists. What exactly is the debate between the two sides about? Who's right and why? Then we will move on to more specific issues about modern evolutionary theory. For example: Biology seems to have few if any laws of its own. Why is that? Also, questions concerning the units of selection, adaptationism, and systematics, etc. Finally, we will get clear on what evolutionary theory means for our conception of ourselves. Is there an essential human nature that we all share? If evolution is right, does that mean we are incapable of genuine altruism?