This is the introductory chapter of the book, which aims to launch a powerful and largely unexplored position in epistemology, naturalized virtue epistemology. Many of the chapters in the book examines empirical findings on the nature of cognitive dispositions and personality traits (Alfano, Battaly, Miller, Pritchard), and this is clearly one direction for naturalized virtue epistemology to take. The book also examines two significant worries for a would-be naturalized virtue epistemology. One problem a naturalistic turn might create for virtue epistemology is the persistent worry about normativity in naturalistic theories. A second worry is that the relevant results from the sciences will signal bad news for virtue epistemology. The book addresses a wide range of issues relevant to the project of developing a naturalized virtue epistemology. Virtue epistemology should be informed by an important development in personality psychology called the Big Five personality traits or Five- Factor Model of traits.