“The landscape of my days appears to be composed, like mountainous regions, of varied materials heaped up pell-mell. There I see my nature, itself composite, made up of equal parts of instinct and training. Here and there protrude the granite peaks of the inevitable, but all about is rubble from the landslips of chance. I strive to retrace my life to find in it some plan, following a vein of lead, or of gold, or the course of some subterranean stream, but such devices are only tricks of perspective in the memory.”