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.