The perfection of energy is the bodhisattva’s tireless efforts to work for the liberation of all beings. It is like armor, because with it the bodhisattva is protected from any obstacles and will not fall prey to the lesser goals of the two vehicles. Like right effort of the eightfold path, the perfection of energy is about preventing the arising of unwholesome states, abandoning those that have arisen, generating positive states, and maintaining positive states that have arisen. Unlike right effort, the perfection of generosity is specifically dedicated to the benefit and liberation of all beings and again the bodhisattva does not hold the idea that either the unwholesome or the wholesome qualities have any essential nature to accept or reject. In this way the bodhisattva is without any undue anxiety over negative states or conceit over positive ones, they simply work unselfconsciously to assist all beings on the path to awakening.
Open Your Eyes, p199