Letter of Dedication

Descartes addresses the letter to the dean and doctors of the sacred faculty of theology in Paris — the dominant intellectual institution of Catholic France. His stated purpose is to provide a philosophical demonstration of two propositions: that God exists, and that the human soul is distinct from the body. He notes that these two truths are necessary if unbelievers are ever to be persuaded, since to tell them Scripture proves it is to argue in a circle for anyone who does not already believe in Scripture.

He recalls that he already touched on these questions in the Discourse on the Method (1637) but did not treat them fully. Now he has worked out the arguments at length and asks the Sorbonne to examine them, correct whatever is in error, and provide their authority. His hope is that if they endorse the arguments, other theologians and philosophers will trust them — and that unbelievers, seeing the endorsement, will find no excuse to doubt.

The political subtext is clear. Descartes had moved to the Netherlands in 1628 partly to escape the risks of Parisian intellectual life; he had watched the condemnation of Galileo in 1633 and carefully suppressed his own treatise on the world. The dedication to the Sorbonne is partly genuine — he did want Catholic philosophers to engage with the work — but it is also a protective maneuver: to get the most powerful theological institution in France on his side before anyone else can declare the book dangerous.