Why seek a doctrine? As soon as you have a doctrine, you fall into dualistic thought.

A perception, sudden as blinking, that subject and object are one, will lead to a deeply mysterious understanding; and by this understanding you will awaken to the truth.

All Buddhas and ordinary people are just one mind. This mind is beyond all measurements, names, oppositions: this very being is it; as soon as you stir your mind you turn away from it.

As soon as the mouth is opened, evils spring forth. People either neglect the root and speak of the branches, or neglect the reality of the 'illusory' world and speak only of Enlightenment. Or else they chatter of cosmic activities leading to transformations, while neglecting the Substance from which they spring--indeed, there is NEVER any profit in discussion.

To make use of your mind to think conceptually is to leave substance and attach yourself to form

...concepts are related to the senses; and, when feeling takes place, wisdom is shut out.

Throughout this life, you can never be certain of living long enough to take another breath.