Religio Medici - The Religion of a Doctor - Sir Thomas Browne. COMPLETE. Religio Medici (The Religion of a Doctor) by Sir Thomas Browne is a spiritual testament and an early psychological self-portrait. Published in 1643 after an unauthorized version was distributed the previous year, it became a European best-seller which brought its author fame at home and abroad. Part the First For my religion, though there be several circumstances that might persuade the world I have none at all