The second thing to be noted is this: that it is only by the unanimity of sane men that we can condemn this man as utterly separate. If he says a tree is a lamp-post he is mad; but only because all other men say it is a tree. If some men thought it was a tree with a lamp on it, and others thought it was a lamp-post wreathed with branches and vegetation, then it would be a matter of opinion and degree; and he would not be mad, but merely extreme. Certainly he would not be mad if nobody but a botanist could see it was a tree. Certainly his enemies might be madder than he, if nobody but a lamplighter could see it was not a lamp-post. And similarly a man is not imbecile if only a Eugenist thinks so. The question then raised would not be his sanity, but the sanity of one botanist or one lamplighter or one Eugenist. That which can condemn the abnormally foolish is not the abnormally clever, which is obviously a matter in dispute. That which can condemn the abnormally foolish is the normally foolish. It is when he begins to say and do things that even stupid people do not say or do, that we have a right to treat him as the exception and not the rule. It is only because we none of us profess to be anything more than man that we have authority to treat him as something less. Now the first principle behind Eugenics becomes plain enough. It is the proposal that somebody or something should criticise men with the same superiority with which men criticise madmen. It might exercise this right with great moderation; but I am not here talking about the exercise, but about the right. Its _claim_ certainly is to bring all human life under the Lunacy Laws. Now this is the first weakness in the case of the Eugenists: that they cannot define who is to control whom; they cannot say by what authority they do these things. They cannot see the exception is different from the rule--even when it is misrule, even when it is an unruly rule. The sound sense in the old Lunacy Law was this: that you cannot deny that a man is a citizen until you are practically prepared to deny that he is a man. Men, and only men, can be the judges of whether he is a man. But any private club of prigs can be judges of whether he ought to be a citizen. When once we step down from that tall and splintered peak of pure insanity we step on to a tableland where one man is not so widely different from another. Outside the exception, what we find is the average. And the practical, legal shape of the quarrel is this: that unless the normal men have the right to expel the abnormal, what particular sort of abnormal men have the right to expel the normal men? If sanity is not good enough, what is there that is saner than sanity?