Good deeds and keenness to gather the causes of his happiness, for the essence of eagerness is that which can be eliminated, so keenness is in one way that the happiness of the keen is due to keenness and in a way that the misery of the keen is due to it. This is why we said by the noun, not by the attribute, and based on this we take all the attributes to which blame is attached, but rather attached. Insulting its banks, not its objects.