You should try to meditate regularly on death and impermanence and thus become a spiritual practitioner of initial scope. Then you should develop the meditations on the unsatisfactory nature of samsara and the three higher trainings [ethics, concentration and wisdom] and thus become a practitioner of medium scope. Finally, you should give birth to love, compassion, universal responsibility and bodhicitta and thus enter the path of the practitioner of great scope, the Mahayana, which has full buddhahood as its goal. Relying on the guidance of a spiritual master, you should cultivate the seeds of bodhicitta in connection with the wisdom of emptiness and, for the sake of all that lives, quickly actualize buddhahood. This may not be an easy task, but it has ultimate perfection as its fruit.
– Ling Rinpoche