having idea of future act to be realized by effort; does not involve determinism, 211-214, determinism results from confusing these two senses, 215-218; Freedom real but indefinable, 219-221. _pp._140-221 CONCLUSION States of self perceived through forms borrowed from external world, 223; Intensity as quality, 225; Duration as qualitative multiplicity, 226; No duration in the external world, 227; Extensity and duration must be separated, 229; Only the fundamental self free, 231; Kant's mistaken idea of time as homogeneous, 232, hence he put the self which is free outside both space and time, 233; Duration is heterogeneous, relation of psychic state to act is unique, and act is free, 235-240. _pp._ 222-240 INDEX CHAPTER I THE INTENSITY OF PSYCHIC STATES [Sidenote: Can there be quantitative differences in conscious states?] It is usually admitted that states of consciousness, sensations, feelings, passions, efforts, are capable of growth and diminution; we are even told that a sensation can be said to be twice, thrice, four times as intense as another sensation of the same kind. This latter thesis, which is maintained by psychophysicists, we shall examine later; but even the opponents of psychophysics do not see any harm in speaking of one sensation as being more intense than another, of one effort as being greater than another, and in thus setting up differences of quantity between purely internal states. Common sense, moreover, has not the slightest hesitation in giving its verdict on this point; people say they are more or less warm, or more or less sad, and this distinction of more and less, even when it is carried over to the region of subjective facts and unextended objects, surprises nobody. But this involves a very obscure point and a much more important problem than is usually supposed. When we assert that one number is greater than another number or one body greater than another body, we know very well what we mean. [Sidenote: Such differences applicable to magnitudes but not to intensities.]