Modernity has radically challenged the assumptions that guide our ordinary lives as persons, in ways we are not normally aware. We live our concrete lives taking for granted that personal decisions, desires, relationships, actions, aspirations, values, and knowledge are central to our existence. But in modernity, we think of these matters as private, idiosyncratic, and subjective, even irrational. This modern conception of ourselves and the associated way of reflection known as modern critical thinking came to dominate our thinking is culminates in the dualistic philosophy of Rene Descartes....