text: All art is but imitation of nature; therefore, let me apply these statements of general principles to the things which have to be made by man. A statue, for example, has afforded matter which was to undergo treatment at the hands of the artist, and has had an artist who was to give form to the matter. Hence, in the case of the statue, the material was bronze, the cause was the workman. And so it goes with all things, – they consist of that which is made, and of the maker. The Stoics believe in one cause only, – the maker; but Aristotle thinks that the word "cause" can be used in three ways: "The first cause," he says, "is the actual matter, without which nothing can be created. The second is the workman. The third is the form, which is impressed upon every work, – a statue, for example." This last is what Aristotle calls the idos. "There is, too," says he, "a fourth, – the purpose of the work as a whole." Now I shall show you what this last means. Bronze is the "first cause" of the statue, for it could never have been made unless there had been something from which it could be cast and moulded. The "second cause" is the artist; for without the skilled hands of a workman that bronze could not have been shaped to the outlines of the statue. The "third cause" is the form, inasmuch as our statue could never be called The Lance-Bearer or The Boy Binding his Hair, had not this special shape been stamped upon it. The "fourth cause" is the purpose of the work. For if this purpose had not existed, the statue would not have been made. Now what is this purpose? It is that which attracted the artist, which he followed when he made the statue. It may have been money, if he has made it for sale; or renown, if he has worked for reputation; or religion, if he has wrought it as a gift for a temple. Therefore this also is a cause contributing towards the making of the statue; or do you think that we should avoid including, among the causes of a thing which has been made, that element without which the thing in question would not have been made?