Philosophy and Methodology of Kriya Yoga
In India, the intellectual method in its highest form is called Jnana Yoga
Paramahansa Yogananda • The Science of Religion (Self-Realization Fellowship)
abhyāsa and vairāgya, practice and dispassion, were mentioned in the first chapter (I.15) as the means of yoga, whereas here in kriyā-yoga, tapas, svādhyāya, and Īśvara-praṇidhāna are being presented as the means.
Edwin F. Bryant • The Yoga Sutras of Patañjali: A New Edition, Translation, and Commentary
The Inner Tradition of Yoga: A Guide to Yoga Philosophy for the Contemporary Practitioner
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