Whether every act increases its habit?

❌ Objection 1 : It would seem that every act increases its habit. For when the cause is increased the effect is increased. Now acts are causes of habits, as stated above (Question [51], Article [2]). Therefore a habit increases when its acts are multiplied.

❌ Objection 2 : Further, of like things a like judgment should be formed. But all the acts proceeding from one and the same habit are alike (Ethic. ii, 1,2). Therefore if some acts increase a habit, every act should increase it.

❌ Objection 3 : Further, like is increased by like. But any act is like the habit whence it proceeds. Therefore every act increases the habit.