SUCH there be, who when they have done a good turn to any, are ready to set them on the score for it, and to require retaliation. Others there be, who though they stand not upon retaliation, to require any, yet they think with themselves nevertheless, that such a one is their debtor, and they know (as their word is) what they have done. Others again there be, who when they have done any such thing, do not so much as know what they have done; but are like unto the vine, which beareth her grapes, and when once she hath borne her own proper fruit, is contented and seeks for no further recompense. As a horse after a race, and a hunting dog when he hath hunted, and a bee when she hath made her honey, look not for applause and commendation; so neither doth that man that rightly doth understand his own nature when he hath done a good turn: but from one doth proceed to do another, even as the vine after she hath once borne fruit in her own proper season, is ready for another time. Thou therefore must be one of them, who what they do, barely do it without any further thought, and are in a manner insensible of what they do.
MARCUS AURELIUS. MEDITATIONS. Book v. 6.