Charles Taylor is one of the leading living philosophers. In this book Arto Laitinen studies and develops further Taylor's philosophical views on human agency, personhood, selfhood and identity. He defends Taylor's view that our ethical understandings of values (so called "strong evaluations") play a central role. The book also develops and defends Taylor's form of value realism as a view on the nature of ethical values, or values in general. The book criticizes Taylor's view that God, nature or human reason are possible constitutive sources of value - Laitinen argues that we should drop the whole notion of a constitutive source. "One of the most careful and thorough explications of Taylor's work in the field of moral theory that I have ever encountered, going into detailed interrogations of matters that other commentators, including myself, have dealt in a much more superficial way. It makes a major contribution to the growing literature on the meaning and significance of Taylor's thought. I have learnt a great deal from it and am confident that future readers will too. The book proposes answers to key questions about moral life in a very thoughtful, well-informed and sometimes counterintuitive way." Ruth Abbey, University of Notre Dame, Indiana, USA"