The Foundations of Knowledge

anger angry appear argument believe bittern bodies C. I. Lewis cause certainty Chap claim colour common sense concerning Conjectures and Refutations consider criticism deceived deduce degree derivative knowledge Descartes describe distinct diurnal motion doubt epistemology essences essentialist evidence example existence explain fact false feel figure goldfinch human ideas imagination inference instrumentalism instrumentalist intuitive knowledge J. L. AUSTIN judgment kind knowl language logical logical positivism manna matter mean molecular doctrine molecules motion nature never Newton's observed opinion pain particles perception perhaps philosophers physical objects prediction primary qualities principles probable problem produce promise propositional knowledge propositions question reality reason recognize say I know scientific secondary qualities seems self-evident sensations sense data sense experience sensible qualities sensory smell sort statements suppose sure symptoms taste theory things Thomas Reid thought tion true truth understanding W. V. QUINE words wrong