Olympus by Devdutt Patnaik

Cosmic Consciousness: A Study in the Evolution of the Human Mind by Richard Maurice Bucke

www.speakingtree.in

www.psychologytoday.com

www.beliefnet.com

www.termly.io

www.wisefoolpress.com

www.thetylt.com

ed.ted.com

www.ox.ac.uk

www.wikepedia.org

Finally, All the respected Holy Books namely, The Holy Quran and Bible, Bhagavat Gita, Tripitaka, The evergreen Vedas, Mahabharata and Odyssey.