The question of eugenics received the attention of Aristotle. In order that children may be as physically sound as possible, legislators should give special attention to the institution of marriage. Youthful marriages are condemned because the children that are born to such unions will be wanting in respect for their parents.[VI-27] Late marriages will be unsatisfactory because there will be too great difference between the ages of the parents and their children. The marriage of a man and a woman whose ages are widely disproportionate will lead to misunderstandings and quarrels. According to the rigorous, unsympathetic dictum of Aristotle, no deformed child shall be permitted to live.[VI-28] Even the advocates of modern birth control may turn for encouragement to Aristotle. In the marriage relation there is inequality. The man is by nature better fitted to command than the woman.[VI-29] The chief characteristic of a good wife is obedience to her husband--a doctrine which is patriarchal. Unfaithfulness of either sex in marriage is disgraceful.[VI-30] Aristotle, like Plato, considers education the leading social force. There is a fundamental educational problem: Shall youth be trained primarily (1) to do useful work, (2) to be virtuous, or (3) to gain higher knowledge?[VI-31] No final answer is given. Aristotle’s conception of education, however, is paternalistic. Utilitarian education possesses a danger line. To be seeking always after the useful prevents one from developing a free and exalted soul.[VI-32] Utilitarian education should cease when it cramps the body or spirit and makes either less fit for the practice of virtue. Gymnastic education should never be professionalized or allowed to hinder the individual’s higher education.[VI-33] The excessive training which leads to Olympic victories is anti-social, because the constitution of the given individual is exhausted. Music is valuable inasmuch as it has the power of forming character.[VI-34] The persons who are engaged in seriously-minded occupations need amusements which will give relaxation. In summary of Aristotle’s social thought it may be said that the Stagirite introduced the comparative method of studying human institutions. He demonstrated the relative value of institutions, showing that those which are best for one age of society will be worthless for a later period. In order to meet changing social needs and conditions, institutions must change. There is a fundamental evolution in social changes. A communistic social organization, according to Aristotle, is psycho-sociologically untenable. The importance of the middle classes is socially inestimable. Laws should be respected in small particulars. The attitude of the members of society toward their social organizations is more important than the type of organization itself. Human conduct in the mass is to a degree predictable.