RogerPenrose’sviewsonthelarge-scalephysicsoftheUniverse,thesmall-scaleworldofquantumphysicsandthephysicsofthemindarecontroversialandwidelydiscussed.ThisbookisafascinatingandaccessiblesummaryofRogerPenrose’scurrentthinkingonthoseareasofphysicsinwhichhefeelstherearemajorunresolvedproblems.Itisalsoastimulatingintroductiontotheradicallynewconceptsthathebelieveswillbefruitfulinunderstandingtheworkingsofthebrainandthenatureofthehumanmind.