Different schools of mental philosophy have variously divided and named the intellectual faculties; we are not careful to follow the exact definitions, divisions, or phraseologies of the metaphysician; it will serve our purpose better to take those prominent points which all may comprehend and appreciate. It appears to us that there are four distinct stages of mental development, characterised by four distinct classes of faculties. The first is distinguished by the perceptive; the second by the conceptive; the third by the knowing; and the fourth by the reasoning. These are discriminated from one another by the peculiar activity of the faculties which are distinctive of each; and they are mutually connected by the necessity of a certain amount of simultaneous active development.
The _perceptive_ faculties adapt you to the material world, and furnish you with information concerning the powers, properties, and glories of matter. Their distinctive office is to observe; and they should be cultivated with the utmost care, for they not only lie at the basis of all mental superstructure, by furnishing the other faculties with the stock, or raw materials to work on; but in proportion to the distinctness of the perceptions will be the accuracy of the memory, and probably the precision of the judgment. How then can their power and activity be developed? simply by exercising them—by opening your eyes and keeping them open. The world is full of objects; but multitudes pass through life of whom it may be said, “having eyes they see not.”
The peculiar function of the _conceptive_ faculties is to store the mind with ideas formed out of previous knowledge. When you completely enter into a scene portrayed in history or in poetry, and approach the situation of the actual observer, you are said to conceive what is meant, and also to imagine it. There is a notion pretty prevalent, that the culture of those powers which relate to the ornamental rather than the essential is to be sought only by the rich, or those destined to occupy a high position in society. No mistake could be more mischievous and cruel. Not only are they sources of enjoyment, but the main safeguards of purity—if, indeed, we should distinguish these; for in being the former they become the latter. The means of æsthetic cultivation are, more or less, within the reach of all. Contemplate the towering mountain and the extending plain—the starry firmament and the boundless ocean; listen to music and oratory; visit the galleries of art, mechanism, and industry. But literature is at once the most potent and most widely available instrument for the expansion of the susceptibilities. Literary artists are the true unveilers of nature.