Every sentient being is endowed with wisdom, but our wisdom is limited in depth and scope because we lack proper training of the mind. Zhi hui du refers specifically to the training of the mind, cultivating the wisdom that allows us to reach the unsurpassed state of attainment,  buddhahood. From an outsider’s point of view, the process appears to be mysterious and connected in some way with religion; a true practitioner, however, knows this training of the mind to be very real.

~ Luminous Wisdom 9 : The Significance of Buddhist Philosophy Today