The Dalai Lama is the spiritual leader of Tibet and the foremost spiritual leader of the Gelug or "Yellow Hat" school of Tibetan Buddhism, which is the newest and most dominant of the four major schools of Tibetan Buddhism. The name "Dalai Lama" is a combination of the Mongolic word dalai meaning "ocean" or "great" and the Tibetan word བླ་མ་ (bla-ma) meaning "master, guru". The Dalai Lamas are believed by Tibetan Buddhists to be manifestations of Avalokiteshvara or Chenrezig, the Bodhisattva of Compassion and the patron saint of Tibet. Bodhisattvas are realized beings who have vowed to be reborn in the world to help all living beings. The current and 14th Dalai Lama is Tenzin Gyatso, who was born on July 6, 1935, to a farming family in northeastern Tibet. He describes himself as a simple Buddhist monk and has consistently advocated policies of non-violence, even in the face of extreme aggression. In 1989, he was awarded the Nobel Peace Prize for his non-violent struggle for the liberation of Tibet. The Dalai Lama has traveled the world and has spoken about various topics, including the welfare of Tibetans, environment, economics, womens rights, nonviolence, interfaith dialogue, physics, astronomy, Buddhism and science, cognitive neuroscience, reproductive health, and sexuality. The Dalai Lama is found rather than chosen, following the Buddhist belief in the principle of reincarnation.