If, however, we certainly cannot bring legal or even moral force to compel everyone to maintain such detailed registers of himself, his ancestral stocks, and his offspring--to say nothing of inducing him to make them public--there is something that we can do. We can make it to his interest to keep such a record.[152] If it became an advantage in life to a man to possess good ancestors, and to be himself a good specimen of humanity in mind, character, and physique, we may be sure that those who are above the average in these matters will be glad to make use of that superiority. Insurance offices already make an inquisition into these matters, to which no one objects, because a man only submits to it for his own advantage; while for military and some other services similar inquiries are compulsory. Eugenic certificates, according to Galton's proposal, would be issued by a suitably constituted authority to those candidates who chose to apply for them and were able to pass the necessary tests. Such certificates would imply an inquiry and examination into the ancestry of the candidate as well as into his own constitution, health, intelligence and character; and the possession of such a certificate would involve a superiority to the average in all these respects. No one would be compelled to offer himself for such examination, just as no one is compelled to seek a university degree. But its possession would often be an advantage. There is nothing to prevent the establishment of a board of examiners of this kind to-morrow, and we may be sure that, once established, many candidates would hasten to present themselves.[153] There are obviously many positions in life wherein a certificate of this kind of superiority would be helpful. But its chief distinction would be that its possession would be a kind of patent of natural nobility; the man or woman who held it would be one of Nature's aristocrats, to whom the future of the race might be safely left without further question. IV