In this book, Daniel Cohen explores the connections between arguments and metaphors, most pronounced in philosophy because philosophical discourse is both thoroughly metaphorical and replete with argumentation. Cohen covers the nature of arguments, their modes and structures, and the principles of their evaluation, and addresses the nature of metaphors, their place in language and thought, and their connections to arguments, identifying and reconciling arguments' and metaphors' respective roles in philosophy.

There are distinct but legitimate notions of both personal justification and interpersonal justification. Interpersonal justification is definable in terms of personal justification. A connection is established between good argumentation and interpersonal justification.

Virtue epistemology was modeled on virtue ethics theories to transfer their ethical insights to epistemology. VE has had great success: broadening our perspective, providing new answers to traditional questions, and raising exciting new questions. I offer a new argument for VE based on the concept of cognitive achievements, a broader notion than purely epistemic achievements. The argument is then extended to cognitive transformations, especially the cognitive transformations brought about by argumentation.

In this paper I challenge the currently fashionable view that we should assess the basic premises of an argument for acceptability rather than for truth, and argue in favour of recognizing premise-truth as a criterion of argument goodness in one important sense and premise-acceptability as a criterion of argument goodness in another important sense.