Time with its continuity logically involves some other kind of continuity
than its own. Time, as the universal form of change, cannot exist
unless there is something to undergo change, and to undergo a change
continuous in time, there must be a continuity of changeable qualities.
Of the continuity of intrinsic qualities of feeling we can now form but
a feeble conception. The development of the human mind has practically
extinguished all feelings, except a few sporadic kinds, sound, colors,
smells, warmth, etc., which now appear to be disconnected and disparate.
In the case of colors, there is a tridimensional spread of feelings.
Originally, all feelings may have been connected in the same way, and the
presumption is that the number of dimensions was endless. For development
essentially involves a limitation of possibilities. But given a number of
dimensions of feeling, all possible varieties are obtainable by varying
the intensities of the different elements. Accordingly, time logically
supposes a continuous range of intensity in feeling. It follows, then,
from the definition of continuity, that when any particular kind of
feeling is present, an infinitesimal continuum of all feelings differing
infinitesimally from that is present.