(1) Whether many habits can be in one power?
(2) Whether habits are distinguished by their objects?
(3) Whether habits are divided into good and bad?
(4) Whether one habit may be made up of many habits? ________________________
FIRST ARTICLE [I-II, Q. 54, Art. 1]
Whether Many Habits Can Be in One Power?
Objection 1: It would seem that there cannot be many habits in one power. For when several things are distinguished in respect of the same thing, if one of them be multiplied, the others are too. Now habits and powers are distinguished in respect of the same thing, viz. their acts and objects. Therefore they are multiplied in like manner. Therefore there cannot be many habits in one power.
Obj. 2: Further, a power is a simple force. Now in one simple subject there cannot be diversity of accidents; for the subject is the cause of its accidents; and it does not appear how diverse effects can proceed from one simple cause. Therefore there cannot be many habits in one power.
Obj. 3: Further, just as the body is informed by its shape, so is a power informed by a habit. But one body cannot be informed at the same time by various shapes. Therefore neither can a power be informed at the same time by many habits. Therefore several habits cannot be at the same time in one power.
On the contrary, The intellect is one power; wherein, nevertheless, are the habits of various sciences.