f the solidarity of our thoughts and
feelings; it is itself a thought.

These three manifestations of mind--sensations, emotions and
thoughts--are mutually exclusive in their tendencies. The patient
forgets the fear of the result in the pain of the operation; in intense
thought the pulse falls, the senses do not respond, emotions and action
are absent. We may say that ideally the unimpeded exercise of the
intellect forbids either sensation or emotion.

Contrasting sensation and emotion, on the one side, with intellect on the
other, feeling with thought, they are seen to be polar or antithetical
manifestations of mind. Each requires the other for its existence, yet in
such wise that the one is developed at the expense of the other. The one
waxes as the other wanes. This is seen to advantage when their most
similar elements are compared. Thus consciousness in sensation is keenest
when impressions are strongest; but this consciousness is a bar to
intellectual self-consciousness, as was pointed out by Professor Ferrier
in his general Law of consciousness.[20-1] When emotion and sensation are
at their minimum, one is most conscious of the solidarity of one's
thoughts; and just in proportion to the vividness of self-consciousness
is thought lucid and strong. In an ideal intelligence, self-consciousness
would be infinite, sensation infinitesimal.

Yet there is a parallelism between feeling and thought, as well as a
contrast. As pain and pleasure indicate opposite tendencies in the
forces which guide sensation and emotion, so do the true and the untrue
direct thought, and bear the same relation to it. For as pain is the
warning of death, so the untrue is the detrimental, the destructive. The
man who reasons falsely, will act unwisely and run into danger thereby.
To know the truth is to be ready for the worst. Who reasons correctly
will live the longest. To love pleasure is not more in the grain of man
than to desire truth. "I have known many," says St. Augustine, "who like
to deceive; to be deceived, none." Pleasure, joy, truth, are the
respective measures of life in sensation, emotion, intellect; one or the
other of these every organism seeks with all its might, its choice
depending on which of these divisions of mind is prominently its own. As
the last mentioned is the climax, truth presents itself as in some way
the perfect expression of life.

We have seen what pleasure is, but what is truth? The question of Pilate
rema