jlynn linked to Hal Koerner's RR100 report and I thought this was a nice little nugget.
"The one thing that separates ultra runners from other contributing members of society, and other athletes, is the ability to forgo all reason, logic,
judgment, and fear and jump into the arms of certain pain solely on intuition and ambition. They may leave the latter on the doorstep as well."
~Sara It's supposed to be hard. If it wasn't hard, everyone would do it. The hard is what makes it great. ~ Jimmy Dugan