Tulku Urgyen Rinpoche was a highly respected Tibetan Dzogchen master who emphasized the practice of Dzogchen, a form of meditation that is considered the highest and most direct path to enlightenment in the Tibetan Buddhist tradition. He was known for his deep understanding and clear explanation of the key principles of Dzogchen, which he shared with his students through his teachings and personal example.

One of the key principles that Tulku Urgyen Rinpoche emphasized was the importance of recognizing the true nature of mind. In Dzogchen, this is known as rigpa, which means "pure awareness" or "primordial wisdom." According to Rinpoche, this innate awareness is present in all sentient beings and is the key to realizing one's true nature and achieving enlightenment. He taught that through meditation and other practices, one can cultivate this awareness and gain insight into the true nature of reality.

Another important principle that Rinpoche emphasized was the concept of non-duality. In Dzogchen, this means recognizing that there is no separation between the individual and the external world. This goes against the conventional understanding of dualism, which sees the self as separate from everything else. Rinpoche taught that by letting go of this dualistic view and embracing the non-dual nature of reality, one can experience a sense of oneness and interconnectedness with all beings.

Tulku Urgyen Rinpoche also emphasized the importance of direct experience over intellectual understanding. He believed that true understanding and realization can only come from direct experience, rather than just intellectual knowledge. For this reason, he encouraged his students to engage in meditation and other practices that would allow them to directly experience the key principles of Dzogchen.

Additionally, Rinpoche stressed the importance of compassion and bodhicitta, the altruistic intention to attain enlightenment for the benefit of all beings. He believed that Dzogchen practice should not be solely focused on personal liberation, but should also be motivated by the desire to help others.

Finally, Tulku Urgyen Rinpoche emphasized the importance of a qualified teacher and the need for a strong commitment to the practice. He believed that having a qualified teacher was essential in understanding and practicing Dzogchen correctly, and that a strong commitment was necessary to overcome obstacles and achieve true realization.

In summary, Tulku Urgyen Rinpoche emphasized the key principles of recognizing the true nature of mind, non-duality, direct experience, compassion, and the need for a qualified teacher and strong commitment in the practice of Dzogchen. His teachings continue to inspire and guide students on the path to enlightenment.