My objections to Naturalism are then, in the first place, that it offers no reason at all, far less any valid reason, for any ethical principle whatever; and in this it already fails to satisfy the requirements of Ethics, as a scientific study. But in the second place I contend that, though it gives a reason for no ethical principle, it is a _cause_ of the acceptance of false principles--it deludes the mind into accepting ethical principles, which are false; and in this it is contrary to every aim of Ethics. It is easy to see that if we start with a definition of right conduct as conduct conducive to general happiness; then, knowing that right conduct is universally conduct conducive to the good, we very easily arrive at the result that the good is general happiness. If, on the other hand, we once recognise that we must start our Ethics without a definition, we shall be much more apt to look about us, before we adopt any ethical principle whatever; and the more we look about us, the less likely are we to adopt a false one. It may be replied to this: Yes, but we shall look about us just as much, before we settle on our definition, and are therefore just as likely to be right. But I will try to shew that this is not the case. If we start with the conviction that a definition of good can be found, we start with the conviction that good _can mean_ nothing else than some one property of things; and our only business will then be to discover what that property is. But if we recognise that, so far as the meaning of good goes, anything whatever may be good, we start with a much more open mind. Moreover, apart from the fact that, when we think we have a definition, we cannot logically defend our ethical principles in any way whatever, we shall also be much less apt to defend them well, even if illogically. For we shall start with the conviction that good must mean so and so, and shall therefore be inclined either to misunderstand our opponent’s arguments or to cut them short with the reply, ‘This is not an open question: the very meaning of the word decides it; no one can think otherwise except through confusion.’