When one advances claims, one must first establish a standard of assessment. To make claims in the absence of such a standard is like trying to establish on the surface of a spinning potter's wheel where the sun will rise and set. Without a fixed standard, one cannot clearly ascertain what is right and wrong or what is beneficial and harmful.

If utility is the ultimate source of moral obligations, utility may be invoked to decide between them when their demands are incompatible…. in other systems, the moral laws all claiming independent authority, there is no common umpire entitled to interfere between them; their claims to precedence one over another rest on little better than sophistry, and, unless determined, as they generally are, by the unacknowledged influence of considerations of utility, afford a free scope for the action of personal desires and partialities.