Of Mercy

We must now go on to consider Mercy, under which head there are four points of inquiry:(1) Whether evil is the cause of mercy on the part of the person pitied?(2) To whom does it belong to pity?(3) Whether mercy is a virtue?(4) Whether it is the greatest of virtues?

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Whether evil is properly the motive of mercy?
Whether the reason for taking pity is a defect in the person who pities?
Whether mercy is a virtue?
Whether mercy is the greatest of the virtues?