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 temperaments as are philosophical. The narrow scientist with his nose in a test-tube cannot understand philosophy."

Ernest ignored the thrust. It was always his way to turn the point back upon an opponent, and he did it now, with a beaming brotherliness of face and utterance.

"Then you will undoubtedly understand the definition I shall now make of philosophy. But before I make it, I shall challenge you to point out error in it or to remain a silent metaphysician. Philosophy is merely the widest science of all. Its reasoning method is the same as that of any particular science and of all particular sciences. And by that same method of reasoning, the inductive method, philosophy fuses all particular sciences into one great science. As Spencer says, the data of any particular science are partially unified knowledge. Philosophy unifies the knowledge that is contributed by all the sciences. Philosophy is the science of science, the master science, if you please. How do you like my definition?"

"Very creditable, very creditable," Dr. Hammerfield muttered lamely.

But Ernest was merciless.

"Remember," he warned, "my definition is fatal to metaphysics. If you do not now point out a flaw in my definition, you are disqualified later on from advancing metaphysical arguments. You must go