It is long since I read his work. All that I know about him is that he was a great yogi along the lines of the traditional jnan yoga, an incarnation of the great god Shiva. His significance, like the significance of all realised saints and yogis is that they keep nourishing and nurturing the spiritual thirst of the earth and humanity and balancing the account of evil by their mere presence by drawing divine forces in the atmosphere.
Affectionately,
Alok Da