Marriage is regarded as holy, and celebrated under solemn rites--all the more because both the ceremony is originated, and the couples selected, by the magistrates, for the most important public purpose: which being fulfilled, the marriage ceases and determines. It is not celebrated with a view to the couple themselves, still less with a view to establish any permanent exclusive attachment between them: which object Plato not only does not contemplate, but positively discountenances: on the same general principle as the Catholic Church forbids marriage to priests: because he believes that it will create within them motives and sentiments inconsistent with the due discharge of their public mission.
[Side-note: Different sentiment which would grow up in the Platonic Commonwealth respecting the sexual relations.]
It is clear that among such a regiment as that which Plato describes in his Guardians, a sentiment would grow up, respecting the intercourse of the sexes, totally different from that which prevailed elsewhere around him. The Platonic restriction upon that intercourse up in the (until the ulterior limits of age) would be far more severe: but it would be applied with reference to different objects. Instead of being applied to enforce the exclusive consecration of one woman to one man, choosing each other or chosen by fathers, without any limit on the multiplication of children,--and without any attention to the maintenance or deterioration of the breed--it would be directed to the obtaining of the most perfect breed and of the appropriate number, leaving the Guardians, female as well as male, free from all permanent distracting influences to interfere with the discharge of their public duties. In appreciating the details of the Platonic community, we must look at it with reference to this form of sexual morality; which would generate in the Guardians an appreciation of details consistent with itself both as to the women and as to the children. The sentiment of obligation, of right and wrong, respecting the relations of the sexes, is everywhere very strong; but it does not everywhere attach to the same acts or objects. The important obligation for a woman never to show her face in public, which is held sacred through so large a portion of the Oriental world, is noway recognised in the Occidental: and in Plato's time, when mankind were more disseminated among small independent communities, the divergence was yet greater than it is now. The Spartans were not induced, by the censures or mockery of persons in other Grecian cities,[147] to suppress the gymnastic exercises practised by their maidens in conjunction with the young men: nor is Plato deterred by the ridicule or blame which others may express, from proclaiming his conviction, that the virtue of his female Guardians is the same as that of the male--consisting in the faithful performance of their duty as Guardians, after going through all the requisite training, gymnastic and musical. And he follows this up by the general declaration, one of the most emphatic in all his writings, "The best thing which is now said or ever has been said, is, that what is profitable is honourable--and what is hurtful, is base".[148]