Buddha Shakyamuni was born in the holy land of India where he taught the three baskets of sutra teachings and four classes of tantric teachings. Many scholars and practitioners achieved fame throughout the three worlds by studying and contemplating these teachings without needing to rely on others, coming from all lands far and near. Among them are seventeen Pandita-siddhas from the ancient Buddhist university of Nalanda, who mastered the profound and extensive teachings of the Buddha. They composed wonderfully eloquent texts that opened the wisdom eye of many discriminating people, and these texts are still studied, practised and meditated upon without degeneration today, close to two thousand six hundred years after the Buddha. All of them were discerning panditas who forcefully expounded reasoning, and highly realized beings who captivated the minds of many tens of thousands of people. Their over sevenhundred texts deal with major and minor subjects, especially sutra and tantra. The translation of these texts into Tibetan led to the emergence of countless sagacious followers in Tibet, surpassing the number of stars in the sky, who became scholars unmistakably realizing the intended meaning of the Buddha’s teachings. As a result, starting from the great forefathers, Tibetans treasured this very teaching of the Buddha, and it became the state religion.