Purification and calm are the first needs in the Yoga. One may have a great wealth of experiences of that kind (worlds, visions, voices etc.) without them, but these experiences occurring in an unpurified and troubled consciousness are usually full of disorder and mixture. <ref>http://incarnateword.in/cwsa/30/the-danger-of-the-ego-and-the-need-of-purification#p50</ref>
importance of purity also comes through when one sees how with inner liberation, total sincerity and perfect purity, all sufferings ends because they will no longer be required for the progress of consciousness. <ref>http://incarnateword.in/cwm/03/the-fool# p21</ref>
'''Purification and Traditional Yoga'''