For any proper understanding of Bergson's thought, it is necessary to grasp his views regarding Time, for they are fundamental factors in his philosophy and serve to distinguish it specially from that of previous thinkers. It is interesting to note however, in passing, that Dr. Ward, in his Realm of Ends, claims to have anticipated Bergson's view of Concrete Time. In discussing the relation of such Time to the conception of God, he says, "I think I may fairly claim to have anticipated him (Bergson) to some extent. In 1886 I had written a long paragraph on this topic." [Footnote: See The Realm of Ends' foot-note on pp. 306-7. Ward is referring to his famous article in the Encyclopaedia Britannica, eleventh edition, Psychology, p. 577 (now revised and issued in book form as Psychological Principles).] Be this as it may, no philosopher has made so much of this view of Time as Bergson. One might say it is the corner-stone of his philosophy, for practically the whole of it is built upon his conception of Time. His first large work, Essai sur les donnees immediates de la conscience, or, to give it its better title, in English, Time and Free Will, appeared in 1889. Our ordinary conception of Time, that which comes to us from the physical sciences, is, Bergson maintains, a false one. It is false because so far from being temporal in character, it is spatial. We look upon space as a homogeneous medium without boundaries; yet we look on Time too, as just such another medium, homogeneous and unlimited. Now here is an obvious difficulty, for since homogeneity consists in being without qualities, it is difficult to see how one homogeneity can be distinguished from another. This difficulty is usually avoided by the assertion that homogeneity takes two forms, one in which its contents co-exist, and another in which they follow one another. Space, then, we say, is that homogeneous medium in which we are aware of side-by-sideness, Time--that homogeneous medium in which we are aware of an element of succession. But this surely we are not entitled to maintain, for we are then distinguishing two supposed homogeneities by asserting a difference of quality in them. To do so is to take away homogeneity. We must think again and seek a way out of this difficulty. Let us admit space to be a homogeneous medium without bounds. Then every homogeneous medium without bounds must be space. What, then, becomes of Time?--for on this showing, Time becomes space. Yes, says Bergson, that is so, for our common view of Time is a false one, being really a hybrid conception, a spurious concept due to the illicit introduction of the idea of space, and to our application of the notion of space, which is applicable to physical objects, to states of consciousness, to which it is really inapplicable. Objects occupying space are marked out as external to one another, but this cannot be said of conscious states. Yet, in our ordinary speech and conventional view of things, we think