The true knowledge or science which exists nowhere but in the mind itself, has no other entity at all besides intelligibility; and therefore whatsoever is clearly intelligible, is absolutely true.
Ralph Cudworth, Thomas Birch (1838). “The True Intellectual System of the Universe: Wherein All the Reason and Philosophy of Atheism is Confuted, and Its Impossibility Demonstrated. A Treatise on Immutable Morality; with a Discourse Concerning the True Notion of the Lord's Supper: and Two Sermons on 1. John 2: 3, 4, and 1. Cor. 15: 27”, p.486