Heart Lamp is the combination of two great texts of pith instructions that are complete and unmistaken treatises, Lamp of Mahamudra and The Heart of the Matter.
Among the Tsele Natsok Rangdröl works, I considered that this Lamp of Mahamudra would benefit everyone interested in the Dharma. The words are clear and easy to understand, and lengthy scholarly expositions are not emphasized. This text, easy to comprehend and containing all key points and very direct instructions, results from following the oral advice of a qualified master.
— Kyabje Dilgo Khyentse
The author, Tsele Natsok Rangdröl, was born in the snowy land of Tibet. It was through study and reflection that he first unraveled the key points of everything that there is to know. Having brought forth realization through meditation training, he became known as a great pandita and siddha, a learned and accomplished master.
Among his various instructions, The Heart of the Matter is both concise and comprehensible. Not only does it contain all the vital points of the Buddha’s words in particular, it lucidly and precisely covers the definitive meaning of the view, meditation, conduct and fruition, in their entirety, so that their practice can take effect and mature in our minds.
—Chökyi Nyima Rinpoche