cases of cholera to the unknown cases, still by inference we get no new fact, though the cases may be new. The very possibility of the establishment of causal connection between bacilli and cholera depended upon observation (perception) of certain cases. So inference ultimately depends upon perception. In inferred cases we do not get any new truth—nothing really new that was not found in observed cases. In observed cases bacilli are followed by cholera, and in the inferred cases, too, bacilli are followed by cholera—no new truth, though the cases are fresh and new.
So in all forms of thought, reasoning, inference, or imagination we are not face to face with Reality. Reason or thought may arrange and systematize facts of experience. It can endeavor to see things as a whole. It may try to penetrate into the mystery of the world. But its effort is hampered by the materials on which it works—facts of experience, sense impressions. They are bald, hard facts, dis-
