Quote from : The Yoga of Spiritual Devotion A Modern Translation of the Narada Bhakti Sutras Book

Spiritual literature can be a great aid to an aspirant, or it can be a terrible hindrance. If it is used to inspire practice, motivate compassion, ad nourish devotion, it serves a very valuable purpose. If scriptural study is used for mere intellectual understanding, for pride of accomplishment, or as a substitute for actual practice, then one is taking in too much mental food, which is sure to result in intellectual indigestion. (152)