A tulku is a fully enlightened one (buddha) or highly accomplished adept (siddha) who chooses to be reborn again and again for the benefit of all beings. Most tulkus, though, are the rebirths of well-trained masters who are engaged in spiritual training and serving others. Tibetan Buddhists have, for well over a millennium, been meticulously following the tradition of finding, recognizing, enthroning, training, and venerating these revered figures...