大方廣圓覺修多羅了義經略疏 1.33

1.33

Although the Buddha is fundamentally what one is, one must cultivate diligently; although delusion is originally non-existent, it must be severed. Having no path to emulate and no traces to follow, one must rely on an enlightened master free of characteristics to instruct and guide one at every turn; hence it enjoins approaching them, giving one's life and casting away one's body, and so on.