Abstract
Reason and sensibility are often contrasted, but more often than not at the cost of distorting both, as denounced by authors such as Musil, Kraus and Wittgenstein, as well as by classical pragmatists such as James and Peirce. It's no coincidence that these philosophers occupy such an important place in the work of Bouveresse, whose rationalism is characterized, among other things, by an acute attention to the mathematization of the mind (but certainly not of the soul), and by an equally necessary sensitivity to truth. We will use this rationalism to show how it can form the basis of a model for today's indispensable reconstruction of reason.