There are as many different aspects of that purpose as there are people in the world; but behind all of them there is one purpose, which may be called the purpose of the whole of creation. And that purpose is accomplished when the inventor looks at his invention working, when the architect builds a house which he has designed, and he enters it and sees how well it is made; the purpose is accomplished when a play is produced, and the producer watches it, that is the fulfillment of his purpose.