The North Pond Hermit

Michael Finkel of GQ tells the story of a man who lived like a phantom in the Maine woods for 27 years.  No communication, stealing what he needed and staying in a tent throughout all 4 seasons.

Sometime in the 1990s, answered Knight, he passed a hiker while walking in the woods.
"What did you say?" asked Perkins-Vance.
"I said, 'Hi,' " Knight replied. Other than that single syllable, he insisted, he had not spoken with or touched another human being, until this night, for twenty-seven years.

Interesting story. Go RTWT.