It is said that he can if he will, and he who believes in eternal life does will. But even so, he ought to think not about the things he does, but about those he wants to do, which, when he believes them allowable, he also does, or, if he does not do them, it is on account of the world. There is an internal effect and* an external effect, or internal and external deed. The external effect or deed proceeds and has existence from the internal effect or deed, just as action from effort. Effort in a man is will; consequently, although he does not do a thing in body, yet if he makes it allowable, then the effort or will remains, and this, in spirit, is action itself. Therefore, recognizing and knowing what his sins are is recognizing and knowing his thoughts, and in them what he makes allowable, and then what he lusts after and favours in his thought. For example, if a man considers whether whoredom is a sin, and what a serious sin it is, whether hatred and acts of revenge are sins, whether thefts and the like, arrogance and pride, contempt also for others, and avarice, are sins; he must then remove any disguises he has cast over them, that is, any confirmations, and let him consult the Word, and he will see.