I think my favorite character of this variety is John Francis, dubbed planet walker. [http://www.planetwalker.org/ http://www.planetwalker.org/] That he spent

I think my favorite character of this variety is John Francis, dubbed planet walker. [http://www.planetwalker.org/ http://www.planetwalker.org/] That he spent years under a vow of silence never once setting foot in a motor vehicle and still managed to get a PhD and actually teach in that time is just awe-inspiring.