Question 153 — Lust

We must next consider the vice of lust which is opposed to chastity: (1) Lust in general; (2) its species. Under the first head there are five points of inquiry:

(1) What is the matter of lust?

• (2) Whether all copulation is unlawful?
• (3) Whether lust is a mortal sin?
• (4) Whether lust is a capital vice?
• (5) Concerning its daughters.