Methodology

Discourse on the Method of Rightly Conducting One's Reason and of Seeking Truth in the Sciences

René Descartes, also an audiobook

Discours de la méthode

René Descartes

French

Six metaphysical meditations

René Descartes, also an audiobook

Sophist

Plato

A Discourse of a Method for the Well Guiding of Reason

René Descartes

Σοφιστής

Plato

Greek