 Consider someone whose deliberations are always guided by this principle: “I shall never do anything unless doing so is best for me”. Such an individual is refusing ever to sacrifice his well-being even to the slightest degree. But in view of the terminological points just made, he could have altruistic motives for some of what he does—or even for much or all that he does! On any given occasion, he could have mixed motives: he is careful always to do what is best for himself, but that allows him also to be motivated by the perception that what he does is also good for others. 