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.

We all want to find happiness and be free from suffering. Happiness comes from positive mental states and actions, and suffering from the opposite. The twelve-part process of dependent arising shows how actions underlain by ignorance propel us from one rebirth into another, keeping us trapped in suffering, and how through understanding reality correctly we can break this cycle. The four noble truths, the twelve links of dependent arising, and the two truths regarding conventional and ultimate reality, all interrelated, form the very core of the Buddha's teaching. The many different practices...