ABSTRACT
The hypothesis to the nature of philosophy for that now argue takes it for granted at the outset that the enterprise of philosophy is distinct both from that of religion and of poetry. The primitive facts of a science are thus the sort of facts which originate or terminate its inquiries. An example of a primitive fact which originates inquiry in physics would be rising and falling of the tide. To regard introspective psychology as a part of philosophy is of course anything but a novel proposal. One hears it said today that, beside the subject-matter of the natural sciences and that of the formal sciences, none remains for philosophy to claim as its own. If the contention is sound, it directly entails that the only reason why a naturalistic theory of so-called 'Mind' is not bad philosophy is that it is not philosophy at all but natural science, and indeed good natural science.
