I should not call that woman chaste who repulses a lover in order to inflame him, who is afraid either of the law or of her husband. As Ovid13 puts it:
She who sinned not because she could not — sinned.
A woman who owes her chastity, not to herself, but to fear, is very rightly put in the class of sinners. In the same way, he who has given a benefit in order that he may get something back has really not given it. At this rate, we also give a benefit to the animals that we rear in order that they may provide us either with service or with food! We give a benefit to the orchards that we tend in order that they may not suffer from drought or the hardness of untilled and neglected ground. But it is not justice nor goodness that moves anyone to cultivate a field, or to perform any act that involves some reward apart from the act itself. The motive that leads to the giving of a benefit is not greedy nor mean, but is humane and generous, a desire to give even when one has already given, and to add new and fresh gifts to old ones, having as its sole aim the working of as much good as it can for him upon whom it bestows; whereas it is a contemptible act, without praise and without glory, to do anyone a service because it is to our own interest. What nobleness is there in loving oneself, in sparing oneself, in getting gain for oneself? The true desire of giving a benefit summons us away from all these motives, and, laying hand upon us, forces us to put up with loss, and, forgoing self-interest, finds its greatest joy in the mere act of doing good.