Lama Zopa Rinpoche teaching at the Ninth Meditation Course, Kopan Monastery, Nepal, 1976.
By Kyabje Lama Zopa Rinpoche in Cumbria, England, 1979

Excerpts from teachings on Geshe Langri Tangpa's Eight Verses of Thought Transformation 

The Benefits of Thought Transformation •
The Precious Human Rebirth; Bodhicitta Motivation •
Bodhicitta Motivation, continued •
Making the Precious Human Rebirth Meaningful •