Taylor: on other minds, 309. Teleology: what, 163; reference, 310. "Telephone Exchange": doctrine of the external world as "messages," 38-44. Thales: his doctrine, 3. Theism: see God. Theory of Knowledge: see Epistemology. Things: our knowledge of, 18-23; contrast of ideas and, 33-36; same contrast in psychology, 36-38; sensations and things, 45 ff.; existence of, 56-58; contrasted with appearances, 59 ff.; real things, 61 ff.; the space of real things, 80-87. Thomas Aquinas: scope of his labors, 9. Time: as necessary, infinite, and infinitely divisible, 88-90; problem of knowing past, present, and future, 90-93; Augustine quoted, 90-91; timeless self criticised, 92-93; real time and apparent, 93-99; real time as necessary, infinite, and infinitely divisible, 95-97; consciousness of time, 97-99; mental phenomena and time, 126-129. Timeless Self: 92-93. Touch: the real world revealed in experiences of, 61-63. Truth: pragmatism and, 219-222 and 312-314; Whewell on veracity, 238-239; criterion of truth in philosophy, 296-298; also, 300-303. Ueberweg: 305, 311. Ultimate Reality: see Reality. "Unknowable": as Reality, 68-72; see Spencer. Utility: of liberal studies, 260-263; of philosophy, 363-272. Verification: in science and in philosophy, 275-277. Ward, James: on concepts of mechanics, 148. "Weltweisheit": philosophy as, 12. Whewell: his common sense ethics, 236-240; referred to, 315. Will: see Free-will. Will to Believe: see Pragmatism. Windelband: 305. Wolff, Christian: definition of philosophy, 10. World: see External World. Wundt: ethics referred to, 315.