Now, there are various kinds of correctness, and it is plain that not every kind of correctness in deliberation is good deliberation; for the incontinent man or the vicious man may duly arrive, by a process of calculation, at the end which he has in view, 157 so that he will have deliberated correctly, though what he gains is a great evil. But to have deliberated well is thought to be a good thing; for it is only a particular kind of correctness in deliberation that is called good deliberation⁠—that, namely, which arrives at what is good.

But, further, what is good may be arrived at by a false syllogism; I mean that a right conclusion as to what is to be done may be arrived at in a wrong way or upon wrong grounds⁠—the middle term being wrong 158 so that what leads to a right conclusion as to what should be done is not good deliberation, unless the grounds also be right.