Satish Kumar has been a Jain monk and a nuclear disarmament advocate, and is the current editor of Resurgence, founder and Director of Programmes of the Schumacher College international centre for ecological studies and of The Small School.
His most notable accomplishment is a "peace walk" with a companion to the capitals of four of the nuclear-armed countries - Washington, London, Paris and Moscow, a trip of over 8,000 miles.
He insists that reverence for nature should be at the heart of every political and social debate.
Defending criticism that his goals are unrealistic, he has said,
Look at what realists have done for us. They have led us to war and climate change, poverty on an unimaginable scale, and wholesale ecological destruction. Half of humanity goes to bed hungry because of all the realistic leaders in the world. I tell people who call me 'unrealistic' to show me what their realism has done. Realism is an outdated, overplayed and wholly exaggerated concept.
He has written numerous books, including Spiritual Compass: The Three Qualities of Life and has also featured on the BBC documentary Natural World Earth Pilgrim
See the interview with Satish in the film below: