It is a little know fact that philosopher and mathematician René Descartes was an avid runner long before the sport achieved its current fanatical status. Descartes found in his running the opportunity to chew on puzzling questions of existence and meaning which he would later rework and record.
Returning home one afternoon after a furious and philosophically productive run he was confronted by his roommate. Offended by Descartes’ foul smell, the roommate shooed him out of the house at which moment all that he had been thinking came together in a lightning bolt of insight.
Descartes stared deeply into the eyes of his accuser and said, “I run, therefore I stink. I stink, therefore I am.”
And the rest is history.