Thầy opens with the Three Dharma Seals—impermanence, no-self, and nirvāṇa—as instruments of practice rather than descriptions of reality. It is not impermanence that causes suffering, but our ignorance of it: if we lived with the insight of impermanence, we would cherish those we love in the present moment rather than taking their presence for granted.

The talk then moves into the Three Natures of Reality: parakalpita—the constructed, dualistic mind that distorts reality through notions of self and permanence; paratantra—training ourselves to see through the lens of interbeing; and niṣpanna—the realm of suchness, where reality is touched as it truly is. The same ground under our feet is saṃsāra or the Kingdom of God depending entirely on our mode of being.

Drawing on the Fifty Verses on the Nature of Consciousness, Thầy reads and explains verses 16–19, 23–24, and 39–42, exploring store consciousness (ālaya), the arising of manas—the cogitating consciousness that grasps store consciousness as a self — and the seven evolving consciousnesses. Verse 42 reminds us that enlightenment is not separate from delusion but found within it.

The teaching is grounded in concrete examples: a Vietnam war veteran who could only see a Vietnamese monk as an enemy until practice opened his eyes; and a reflection on whether Thầy is present in Vietnam despite thirty years of exile.

This is the fourth talk in a series of eight given during the Opening the Door to Healing & Transformation retreat, on the teachings of Buddhist psychology, in the year 1997. Thầy offered this talk in Key West, Florida, in the United States.

These teachings later appear in the book Understanding Our Mind