One day when I was twenty-three or twenty-four this sentence seemed to form in my head, without my willing it, much as sentences form when we are hal… - William Butler Yeats

" "

One day when I was twenty-three or twenty-four this sentence seemed to form in my head, without my willing it, much as sentences form when we are half-asleep: "Hammer your thoughts into unity." For days I could think of nothing else, and for years I tested all I did by that sentence.