This is a new publication of eight of Schr dinger's lectures: "Science, Art and Play""The Law of Chance""Indeterminism In Physics""Is Science a Fashion of the Times?""Physical Science and the Temper of the Age""What is a Law of Nature?""Conceptual Models in Physics and their Philosophical Value""The Fundamental Idea of Wave Mechanics" (Schr dinger's Nobel Address delivered at Stockholm on December 12, 1933)