This book, by one of Spain's most eminent philosophers, provides a lively and very accessible introduction to philosophy. Written for those who have no prior knowledge of the field, it reveals how the central problems of philosophy remain highly relevant to everyday contemporary life. Savater addresses the questions that we ourselves must face: what is this 'I' that I take for granted? What does it mean for me to be in the world? In what sense am I free? And how does the idea of death affect my life?