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changed, nor would the fact that interest and repetition aid memory stop being true. The man who thought his mind was a collection of little cells would dream, imagine, think, and feel; so also would the man who believed his mind to be immaterial immaterial Something that is not made of physical matter; spiritual or purely mental.. It is very fortunate that the same mental activities original: "phenomena" occur no matter what theory is adopted. Those who like to study the puzzles of what mind and matter really are must look to metaphysics metaphysics The branch of philosophy that deals with the first principles of things, including abstract concepts such as being, knowing, substance, cause, identity, time, and space.. Even if we should ever find that salt, arsenic, and everything else are actually the same substance with a different molecular arrangement, we still would not use them interchangeably.”
For the purposes of studying practical psychology, we may as well set aside our favorite philosophical ideas original: "pet metaphysical conceptions", even if only for a moment. We should act as if we knew nothing of the essential nature of Mind—and indeed, Science in truth does not know. Instead, let us confine ourselves to the actions and expressions original: "phenomena and manifestations" of the Mind. After all, observing how it acts is the only way we can know anything at all about it. As Brooks original: "Brooks"; likely referring to Edward Brooks (1831–1912), an influential American educator and author of "Mental Science and Methods of Mental Culture." says: “The mind can be defined only by its activities and expressions. In order to obtain a definition of the