The famous source of the graduated teachings on the path to enlightenment found in all schools of Tibetan Buddhism

The Six Perfection (generosity, ethical discipline, patience, enthusiastic effort, concentration, and wisdom) are practiced by Bodhisattvas who have the supreme intention of attaining enlightenment for the sake of all living beings.

These teachings by Geshe Sonam Rinchen explain the altruistic wish to attain enlightenment and the precepts of training which accompany it.