We are also created in such a way that we cannot help longing after poverty.

The pauper must always, among all men, be the most envied of mortals.

Nature, too, has made us such that the passion of love, when it arises, is so vehement, so all-consuming that it must always struggle to avoid requital.

This is the reason why, when two people find that they love each other, they always separate and avoid one another for the rest of their lives.
This is human nature.

We cannot help it; and it is this that distinguishes us from the animals.