We've created an unnatural form of running. It's not just the shoes, but we run on artificial surfaces - straight ahead, hard and steady - instead of speeding up and slowing down, reacting to the terrain with changes of pace and rhythm.

We're constantly told that running will ruin our knees and outrage our hearts, but for nearly all of human existence, it was associated with freedom, vitality, and eternal youth.

it’s easy to get outside yourself when you’re thinking about someone else.

If you can run six miles on a summer day, then you, my friend, are a lethal weapon in the animal kingdom.

human urine is both nutrient-rich and an effective tooth whitener

There are two goddesses in your heart,” he told them. “The Goddess of Wisdom and the Goddess of Wealth. Everyone thinks they need to get wealth first, and wisdom will come. So they concern themselves with chasing money. But they have it backwards. You have to give your heart to the Goddess of Wisdom, give her all your love and attention, and the Goddess of Wealth will become jealous, and follow you.” Ask nothing from your running, in other words, and you’ll get more than you ever imagined.

Nearly all runners do their slow runs too fast, and their fast runs too slow." Ken Mierke says. "So they're just training their bodies to burn sugar, which is the last thing a distance runner wants. You've got enough fat stored to run to California, so the more you train your body to burn fat instead of sugar, the longer your limited sugar tank is going to last." -The way to activate your fat-burning furnace is by staying below your aerobic threshold--your hard-breathing point--during your endurance runs.