In this lively book, Stephen Hetherington introduces us to epistemological theorizing. He builds a theory and tests it, refines it, and challenges it again. He explores such topics as evidence, truth and belief, different kinds of knowledge, and knowledges value, as well as sceptical views concerning knowledge of the physical world, ones own mind and memory, and rational limits observation and reason. This epistemological theorizing is then applied to some of lifes most pressing issues, such as how to live and how to understand ourselves and others.