... possession of principles. But the bulk of mankind require either to understand the theory of what they are doing, or to have rules laid down for them by those who have understood the theory. In the ... directly, and of themselves; some through the medium of other truths. The former are the subject of Intuition, or Consciousness;4 the latter, of Inference. The truths known by intuition are the original ... conception of the scope and province of our science. The employment of the word Logic to denote the theory of Argumentation, is derived from the Aristotelian, or, as they are commonly termed, the...