Mastering the Machine
How Ray Dalio built the world's richest and strangest hedge fund.
http://www.newyorker.com/magazine/2011/07/25/mastering-the-m...
This hour-long interview at a members-only event at the Council on Foreign Relations is also worth watching to get the distinct flavor of the man:
http://www.cfr.org/world/ceo-speaker-series-conversation-ray...