the moment I stop, I think no more, and as soon as I am again in motion, my head resumes its workings,” averred the Swiss-born philosopher Jean-Jacques Rousseau. The French philosopher and essayist Michel de Montaigne lamented that his thoughts often came to him when he was on the move, at moments when “I have nothing to jot them down on”; this was wont to happen “especially on my horse, the seat of my widest musings.”
