Abstract
We can and do reflect in very general terms on human beings and their place in the world, and we do so for a number of reasons and in a variety of ways. We can notice similarities between human beings and other parts of nature, or differences between them and most other things, or even respects in which they are unique in the world as we know it. Human beings are born and grow and they decline and die. They are the only things in the universe who laugh. Human beings also act. Unlike rocks on a mountainside or branches of a tree, they do not just move, they do things. Other animals also do things, but humans differ from them in the extent to which they think about what to do, and then act as a result of that deliberation. And, not coincidentally, human beings also know things about the world around them. Knowledge is essential to deliberation and to informed action.