Why is he famous?

that [ic is dirac, not wheeler

Biography

Anecdotes

The first time I met Wheeler was in 1961, I was an undergraduate… with a somewhat unorthodox academic record. …The hope was that …I would be admitted as a graduate student… At the time I was working as a plumber… I was completely enthralled. John was enthusiastically describing his vision of how space and time would become a wild, jittery, foamy world of quantum fluctuations when viewed through a tremendously powerful microscope. He told me that the most profound and exciting problem of physics was to unify Einstein's two great theories—General Relativity and Quantum Mechanics. He explained that only at the Planck distance would elementary particles reveal their true nature, and it would be all about geometry—quantum geometry. To a young aspiring physicist, the stuffy businessman exterior had morphed into an idealistic visionary. I wanted more than anything to follow this man into battle. Leonard Susskind, The Black Hole War: My Battle with Stephen Hawking to Make the World Safe for Quantum Mechanics (2008)

Some people think Wheeler's gotten crazy in his later years, but he's always been crazy Richard Feynman, as quoted by Michael Carlson: (15 April 2008)"Obituary. John Wheeler". The Guardian.