Against The Platonists
In 1665 he published an essay entitled Tentamina physico-theologica de Deo, dedicated to Archbishop Gilbert Sheldon, who in 1667 appointed him one of his chaplains. In 1666-7 Parker published two pamphlets targeting the Cambridge Platonists. He had just become a Fellow of the Royal Society, and these works were designed to put distance between the experimentalists of the Society and the speculations of metaphysics. In fact the Free and Impartial Censure took wide aim at hermetic thinkers in general, such as Rosicrucians, Thomas Vaughan and John Heydon. It also had as a byproduct of the critique of Platonism acute things to say about the assumption that innate knowledge was necessarily correct.
Read more about this topic: Samuel Parker (bishop Of Oxford)