How we cite our quotes: (Chapter.Paragraph)
Quote #1
Passions are spurs to action, and open the mind; but they sink into mere appetites, become a personal and momentary gratification, when the object is gained, and the satisfied mind rests in enjoyment. (2.45)
It's true that sexual passions can push people into action and even make them do great things. But the truth is that once sexual urges are satisfied, the passion totally evaporates and eradicates all feelings of love.
Quote #2
Still, highly as I respect marriage, as the foundation of almost every social virtue, I cannot avoid feeling the most likely compassion for those unfortunate females who are broken off from society, and by one error torn from all those affections and relationships that improve the heart and mind. (4.66)
Wollstonecraft feels sorry for all the women who have ruined their reputations by having sex with some guy who charmed his way into their beds. This social punishment for a woman having premarital sexytimes is way too harsh in Wollstonecraft's mind.
Quote #3
It does not frequently deserve the name of error; for many innocent girls become the dupes of a sincere, affectionate heart, and still more are, as it may emphatically be termed, ruined before they know the difference between virtue and vice. (4.66)
Many girls are kept so ignorant of the world by their parents that they have sex and ruin their reputations before they're even old enough to understand how they're supposed to behave. In Wollstonecraft's mind, it's the parents' fault for keeping their daughters in the dark.