Yoga by Mircea Eliade

Essai sur les origines de la mystique indienne

A compact historical and phenomenological study of Indian yoga traditions that traces their development, philosophical foundations (Sāṃkhya, Vedānta and related systems), and technical practices—āsana, prāṇāyāma, meditation and samādhi—as means to spiritual liberation; it situates classical and tantric forms in their ascetic and ritual contexts and interprets yoga as a practical program for overcoming ordinary temporal existence and achieving immortality or freedom.