In this dissertation I attempt to devise a satisfactory general principle for moral decision-making. I assume such a principle would give complete and consistent directives; it would give intuitively sound directives; and its fundamental aim would be the maximization of the good, or utility. Future generations provide a test of principles of moral choice. For a sound principle should accommodate choices affecting all people at all times. But attempts to accommodate choices affecting future generations under a general principle of moral choice have led to two paradoxes: the paradox of future generations and the mere addition paradox. The principles of total and average utility both give complete and consistent directives in all cases, includ...