| ### QUESTION 51 ### OF THE CAUSE OF HABITS, AS TO THEIR FORMATION ###  |

| #### Prologue |

| #### #### We must next consider the cause of habits: and firstly, as to their formation; secondly, as to their increase; thirdly, as to their diminution and corruption. Under the first head there are four points of inquiry: #### (1) Whether any habit is from nature? #### (2) Whether any habit is caused by acts? #### (3) Whether any habit can be caused by one act? #### (4) Whether any habits are infused in man by God? ####  |