A person is disposed to an act of choice by an angel … in two ways. Sometimes, a man’s understanding is enlightened by an angel to know what is good, but it is not instructed as to the reason why … But sometimes he is instructed by angelic illumination, both that this act is good and as to the reason why it is good.
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Justice is a certain rectitude of mind whereby a man does what he ought to do in the circumstances confronting him.
If, then, you are looking for the way by which you should go, take christ, because he himself is the way.