Whether pride is the beginning of every sin?

Objections

Objection 1 : It would seem that pride is not the beginning of every sin. For the root is a beginning of a tree, so that the beginning of a sin seems to be the same as the root of sin. Now covetousness is the root of every sin, as stated above (Article [1]). Therefore it is also the beginning of every sin, and not pride.
Objection 2 : Further, it is written (Ecclus. 10:14): "The beginning of the pride of man is apostasy [Douay: 'to fall off'] from God." But apostasy from God is a sin. Therefore another sin is the beginning of pride, so that the latter is not the beginning of every sin.
Objection 3 : Further, the beginning of every sin would seem to be that which causes all sins. Now this is inordinate self-love, which, according to Augustine (De Civ. Dei xiv), "builds up the city of Babylon." Therefore self-love and not pride, is the beginning of every sin.