Hearing your teacher's instructions and knowing how to explain them to others will not liberate your own mind, so you must meditate.

But if you spend your whole life practising just an outward show of meditation - meditating with mental dullness, cluttering the mind with fantasies, and taking many breaks during your sessions because you're unable to control mental scattering - no good experiences or realisations will arise.

-- Lerab Lingpa