Similarly,

We think utility, or happiness, much too complex and indefinite an end to be sought except through the medium of various secondary ends ... [T]he attempt to make the bearings of actions upon the ultimate end more evident than they can be made by referring them to the intermediate ends, and to estimate their value by a direct reference to human happiness, generally terminates in attaching most importance, not to those effects which are really the greatest, but to those which can most easily be pointed to and individually identified.

-- John Stuart Mill

Unfortunately Mill gets wordy in the middle, instead of just saying "... various secondary ends. Attempting to focus directly on happiness generally terminates in..."