In Natural Theology, published in 1802, William Paley posited that there was a difference between finding a stone and a watch on the ground. He wrote, “the inference, we think, is inevitable, that the watch had a maker: that there must have existed, at some time, and at some place or other, an artificer or artificers who formed it for the purpose which we find it actually to answer: who comprehended its construction and designed its use.” Paley used the watchmaker analogy to justify the existence of God.