Thomas Aquinas,
Summa Theologiae — Question 170 - OF THE PRECEPTS OF TEMPERANCE…
“ Among the species of vices opposed to fortitude there is not one that is so directly opposed to the love of our neighbor as adultery, which is a species of lust that is opposed to temperance. And yet the vice of daring, which is opposed to fortitude, is wont to be sometimes the cause of murder, which is forbidden by one of the precepts of the decalogue: for it is written (Ecclus. 8:18) : "Go not on the way with a bold man lest he burden thee with his evils."Reply to Objection 2: Gluttony is not directly opposed to the love of our neighbor, as adultery is. ”
