Whether lust is a capital vice?

❌ Objection 1 : It seems that lust is not a capital vice. For lust is apparently the same as "uncleanness," according to a gloss on Eph. 5:3 (Cf. 2 Cor. 12:21). But uncleanness is a daughter of gluttony, according to Gregory (Moral. xxxi, 45). Therefore lust is not a capital vice.

❌ Objection 2 : Further, Isidore says (De Summo Bono ii, 39) that "as pride of mind leads to the depravity of lust, so does humility of mind safeguard the chastity of the flesh." Now it is seemingly contrary to the nature of a capital vice to arise from another vice. Therefore lust is not a capital vice.

❌ Objection 3 : Further, lust is caused by despair, according to Eph. 4:19, "Who despairing, have given themselves up to lasciviousness." But despair is not a capital vice; indeed, it is accounted a daughter of sloth, as stated above (Question [35], Article [4], ad 2). Much less, therefore, is lust a capital vice.