 The Understanding Faculties being given to Man, not barely for Speculation, but also for the Conduct of his Life, Man would be at a great loss, if he had nothing to direct him, but what has the Certainty of true Knowledge… Therefore, as God has set some Things in broad day-light; as he has given us some certain Knowledge…So in the greater part of our Concernment, he has afforded us only the twilight, as I may say so, of Probability, suitable, I presume, to that State of Mediocrity and Probationership, he has been pleased to place us in here, wherein to check our over-confidence and presumption, we might by every day’s Experience be made sensible of our short sightedness and liableness to Error… (IV.14.1–2, N: 652)