This organ lies immediately at the sides of _Comparison_ and is found large in men distinguished for profound metaphysical talent. We have shown how _Individuality_ and _Eventuality_ take cognizance of things evident to the senses; Causality looks to the _cause_ of the phenomena observed by other faculties: it expresses the irresistible conviction that every phenomenon and change around us emanates from a mighty, an unseen, an ETERNAL GOD; it looks to HIM as the cause of our joys, and our possessions here, as the omniscient and ever merciful Father who gave his Son to die for our transgressions, it seeks Him as the cause of our hopes of everlasting bliss, and it bids us to acknowledge and adore. It is the faculty that considers the relation of cause and effect and prompts the question, _Why?_ to whatever is unknown, or imperfectly understood; and for this reason requires to be watched lest the matter of enquiry be placed beyond the limited faculties of man, and infinite subjects be thus reasoned upon by finite capacity. If this organ be in unity with _Veneration_, _Conscientiousness_, and _Comparison_, the individual will be of steady, and rational Christian principles, but if without them, impious doubts and atheistical surmises will tend to require a _visible_ cause for what must be _invisible_ and the germ of error being planted, it may take root and abound to the ruin of nobler and more elevating opinions. In ABUSE, this organ produces a mania for possibilities, denying the existence of causes not evident to the senses, a disbelief in whatever is spiritual, and a direct influence to intellectual pride, sophistry, and error. 26. GAIETY. The organ of Gaiety is sometimes called WIT; and has been defined by Spurzheim as "a sentiment which disposes men to view every thing in a gay, joyful, and mirthful manner;"--"given to man to render him merry and gay,--feelings not to be confounded with satisfaction and contentment." The faculty appears to give a characteristic tendency to view every thing that occurs in a light manner, simply as far as it gratifies, and pleases, not in proportion to its intrinsic value, combined with the higher faculties, it produces wit, in common events humour; with the animal propensities, sarcasm and satire, or caricature and excess; with language, punning and double meanings, and in all cases it tends to a levity that is often misplaced. It is situated between Ideality and Causality at the upper part of the side of the forehead. In ABUSE, or when not counteracted by reason and reflection, it tends to severity and satirical remarks on the failings and weaknesses of others: a too easy regard for sin when not positively offensive, a love of pleasure, often leading to vicious excess; and frequently the faculty to gratify itself, offends friends by ill timed remarks and a system of practical jokes.