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When a fully qualified Mahayana disciple relies completely upon a fully qualified Mahayana Spiritual Guide the attainment of enlightenment is easy.

Geshe Kelsang Gyatso (1990). “Joyful Path of Good Fortune: The Complete Buddhist Path to Enlightenment”, p.97, Motilal Banarsidass Publ.
When a fully qualified Mahayana disciple relies completely upon a fully qualified Mahayana Spiritual Guide the attainment of enlightenment is easy.