This paper shows that a minimal degree of consideration for other people's
well-being enables society to agree that one social policy is the best. I o
ffer axioms that imply that this best policy maximizes a weighted sum of in
dividual utilities. The weight of each individual is the inverse of his or
her maximal possible utility from social endowments. The suggested policy i
s not sensitive to the choice of the von Neumann-Morgenstern utilities. The
key axiom is that individuals agree that giving all the endowments always
to one person is as bad as giving them to any other person.