This Presentation of the Classifications of Mind: The Essence of the Ocean of Texts on Reasoning was requested by the Student Welfare Union of Karma Shri Nalanda [Institute for Higher Buddhist Studies] with the words: “If you were to compose such [a text] it would be of great benefit for young newcomers.”It was completed by the Khenpo named Tsültrim Gyamtso on August 12th, 1984.Khenpo Tsultrim Gyamtso Rinpoche is a noted Buddhist scholar and teacher who was born in Eastern Tibet in 1934. Known for his highly engaging teaching style, he has traveled and taught in North America, Europe, and Asia from 1977 to 2007. He is the author of The Sun of Wisdom, The Moon of Wisdom, and Progressive Stages of Meditation on Emptiness, and numerous songs of realization.