Tārā is a meditation deity revered by practitioners of the Tibetan branch of Vajrayana Buddhism to develop certain inner qualities and to understand outer, inner and secret teachings such as karuṇā (compassion), mettā (loving-kindness), and shunyata (emptiness). Tārā may more properly be understood as different aspects of the same quality, as bodhisattvas are often considered personifications of Buddhist methods.
There is also recognition in some schools of Buddhism of twenty-one Tārās. A practice text entitled Praises to the Twenty-One Taras, is the most important text on Tara in Tibetan Buddhism. Another key text is the Tantra Which is the Source for All the Functions of Tara, Mother of All the Tathagatas.