These two points have been proved as general principles and in detail in the whole of the first part on conjugial love and the delights of its wisdom. It is the jewel of human life, because a person's life is such as is the conjugial love he has, for this makes up the inmost level of his life. This is the life of wisdom living together with its love, or of love living together with its wisdom, so that it is the life of the delights of both. In short, it is that love which makes a person a living soul; and hence the principle of one man marrying one wife is called the jewel of human life.

[2] This is proved by the following points which were made above. With one wife truly conjugial friendship, trust and potency is possible, because it is a union of minds (333, 334). It is the place and origin of the celestial blessedness, the spiritual happiness and so the natural pleasures which have been provided from the beginning for those who enjoy truly conjugial love (335). It is the foundation of all celestial, spiritual and so natural loves, and on it are conferred all joys and delights from first to last (65-69). As regards its source, it is the sport of wisdom and love, as was fully proved in the Delights of Wisdom concerning Conjugial Love, which is the title of the first part of this book.