There is no one who does not consider his self-interest. If you change their minds to think in your interests, then you will instead be unable to win their minds and use them. (Shenzi)

There are those who sell their labor and work as farmhands. Their employers provide them with tasty meals and pay them with monetized coins. This is not out of love for the laborers: by doing so, the diggers will dig deeper, and the weeders will be more thorough. The laborers exert themselves to dig and weed more quickly, using all their skills to properly prepare the fields. This is not out of love for their employers: only by doing so will the employers give them tasty meals and monetized coins. Thus employers provide for laborers the way fathers benevolently care for their sons, while the laborers are focused on their work. All this is done out of self-interest. (Hanfeizi)