This bilingual edition of the Synopsis Purioris Theologiae (1625) makes available for the first time to English readers a seminal treatise of Reformed Scholasticism. Composed by four professors of Leiden University (Johannes Polyander, Andreas Rivetus, Antonius Walaeus, and Anthonius Thysius), it gives an exhaustive yet concise presentation of Reformed theology as it was conceived in the first decades of the seventeenth century. From a decidedly Reformed perspective, the Christian doctrine is defined in contrast with alternative or opposite views (Catholic, Spiritualist, Arminian,...