Sher then defends both B 9 and D, devoting most of his time to D. He defends D by means of an interesting argument to the conclusion that, if morality is “practical, universal, omnitemporal, and (in [a] specified sense) overriding and inescapable” then a commitment to it will result in D. All too briefly: to be committed to morality as practical, i. e., as action guiding, requires being motivated to act in accord with its dictates—and so requires having a desire.
Source: wiktionary