The swordsman Musashi, whose work was aggressively and violently physical, took up painting late in life, and observed that each form of art enriched the other. Indeed, flower arranging, calligraphy, and poetry have long been popular with Japanese generals and warriors, a wonderful pairing of opposites—strength and gentleness, stillness and aggression. Hakuin, the Zen master, excelled at painting and calligraphy, producing thousands of works in his lifetime. NBA champion Chris Bosh taught himself how to code. Einstein had his violin, Pythagoras has his lyre. William Osler, the founder of Johns Hopkins University, told aspiring medical students that when chemistry or anatomy distressed their soul, “seek peace in the great pacifier, Shakespeare.”