extirpate

The answer is that Reason is not master over defects inhering in the mind itself, but over the passions or moral defects that are adverse to justice and manliness and temperance and judgement; and its action in their case is not to extirpate the passions, but to enable us to resist them successfully.

For example, none of you is able to extirpate our natural desire, but the Reason can enable him to escape being made a slave by desire.

None of you is able to extirpate anger from the soul, but it is possible for the Reason to come to his aid against anger.

None of you can extirpate a malevolent disposition, but Reason can be his powerful ally against being swayed by malevolence.

Reason is not the extirpate of the passions, but their antagonist.