his body, to the thoughts and emotions in his mind, so his neighbor
does the same?

We must not allow ourselves to underrate the plain man's knowledge
either of bodies or of minds. It seems, when one reflects upon it, a
sufficiently wonderful thing that a few fragmentary sensations should
automatically receive an interpretation which conjures up before the
mind a world of real things; that, for example, the little patch of
color sensation which I experience when I turn my eyes toward the
window should seem to introduce me at once to a world of material
objects lying in space, clearly defined in magnitude, distance, and
direction; that an experience no more complex should be the key which
should unlock for me the secret storehouse of another mind, and lay
before me a wealth of thoughts and emotions not my own. From the poor,
bare, meaningless world of the dawning intelligence to the world of
common thought, a world in which real things with their manifold
properties, things material and things mental, bear their part, is
indeed a long step.

And we should never forget that he who would go farther, he who would
strive to gain a better knowledge of matter and of mind by the aid of
science and of philosophical reflection, must begin his labors on this
foundation which is common to us all. How else can he begin than by
accepting and more critically examining the world as it seems revealed
in the experience of the race?

8. SCIENTIFIC KNOWLEDGE.--Still, the knowledge of the world which we
have been discussing is rather indefinite, inaccurate, and
unsystematic. It is a sufficient guide for common life, but its
deficiencies may be made apparent. He who wishes to know matter and