But in beasts of prey the conjunction lasts longer: because the dam not being able well to subsist herself, and nourish her numerous off-spring by her own prey alone, a more laborious, as well as more dangerous way of living, than by feeding on grass, the assistance of the male is necessary to the maintenance of their common family, which cannot subsist till they are able to prey for themselves, but by the joint care of male and female.

The same is to be observed in all birds, (except some domestic ones, where plenty of food excuses the cock from feeding, and taking care of the young brood) whose young needing food in the nest, the cock and hen continue mates, till the young are able to use their wing, and provide for themselves.
Sect.80.And herein I think lies the chief, if not the only reason, why the male and female in mankind are tied to a longer conjunction than other creatures, viz.

because the female is capable of conceiving, and de facto is commonly with child again, and brings forth too a new birth, long before the former is out of a dependency for support on his parents help, and able to shift for himself, and has all the assistance is due to him from his parents: whereby the father, who is bound to take care for those he hath begot, is under an obligation to continue in conjugal society with the same woman longer than other creatures, whose young being able to subsist of themselves, before the time of procreation returns again, the conjugal bond dissolves of itself, and they are at liberty, till Hymen at his usual anniversary season summons them again to chuse new mates.

Wherein one cannot but admire the wisdom of the great Creator, who having given to man foresight, and an ability to lay up for the future, as well as to supply the present necessity, hath made it necessary, that society of man and wife should be more lasting, than of male and female amongst other creatures; that so their industry might be encouraged, and their interest better united, to make provision and lay up goods for their common issue, which uncertain mixture, or easy and frequent solutions of conjugal society would mightily disturb.
Sect.81.But tho' these are ties upon mankind, which make the conjugal bonds more firm and lasting in man, than the other species of animals; yet it would give one reason to enquire, why this compact, where procreation and education are secured, and inheritance taken care for, may not be made determinable, either by consent, or at a certain time, or upon certain conditions, as well as any other voluntary compacts, there being no necessity in the nature of the thing, nor to the ends of it, that it should always be for life; I mean, to such as are under no restraint of any positive law, which ordains all such contracts to be perpetual.
Sect.82.But the husband and wife, though they have but one common concern, yet having different understandings, will unavoidably sometimes have different wills too; it therefore being necessary that the last determination, i.e.the rule, should be placed somewhere; it naturally falls to the man's share, as the abler and the stronger.

But this reaching but to the things of their common interest and property, leaves the wife in the full and free possession of what by contract is her peculiar right, and gives the husband no more power over her life than she has over his; the power of the husband being so far from that of an absolute monarch, that the wife has in many cases a liberty to separate from him, where natural right, or their contract allows it; whether that contract be made by themselves in the state of nature, or by the customs or laws of the country they live in; and the children upon such separation fall to the father or mother's lot, as such contract does determine.
Sect.83.For all the ends of marriage being to be obtained under politic government, as well as in the state of nature, the civil magistrate doth not abridge the right or power of either naturally necessary to those ends, viz.