“Certainly risk lays down stronger memories than any other type of experience. I’ve forgotten my first kiss, but I remember every detail of a close encounter with a herd of elephants in Botswana. I can still feel the chill of coming upon the skin of a boar stretched across a faint, unmarked trail in a canyon in Hawaii, a warning to trespassers like me. And I remember every step of the last mile of the New York City Marathon, when I felt that my knees might literally explode.”
