When a man has learned the arts and sciences of which I have spoken--when he has examined the political, religious and philosophical opinions which have governed the world from the remotest ages--he sees that the number of original ideas is not as great as one might suppose--he perceives that all mental faculties are connected--and that there is a chain which unites all thoughts--that they proceed from each other--that an idea must spring from a cause which gives rise to it. Thus he studies the laws of reasoning--thus by practice he learns to fix his attention on his sensations, and sometimes a single sensation, when properly analyzed, presents him the substance of a whole discourse: for a good discourse is nothing more than _a series of judgments_ logically deduced from each other,--_it is a chain of ideas connected by a close analogy_. By training his mind to logical deductions, he acquires by degrees, the facility of combining ideas; and, guided by analogy, he reasons correctly without effort. Reasoning is learned like languages. At first, we hesitate in placing the words of a foreign tongue--we are obliged to recollect the rule which is to guide us in every part of speech; but when thoroughly versed in the genius of the language, we speak it fluently, without thinking about the arrangement of words. So it is with reasoning. A man who is equally versed in several languages, may express his ideas without knowing at the moment, in what idiom he imbodies his thoughts. A man who has trained his mind logically, reasons well, without thinking about the principles which guide him. It is well known that men have many ideas in common, and very often an author becomes popular and illustrious, only because he expresses with great superiority and beauty, that which every body thinks and feels. This is the very foundation of poetry and eloquence. It is this art which is called _nature_, and which gives immortality to literary productions. The work which does not awake our sympathy--which is not in harmony with the feelings of our nature--and which is not expressed in words best suited to its subject, can never acquire fame for its author. Hence the importance of the _improvvisatore's_ studying mankind--hence the necessity of learning to imbody his ideas in appropriate language.--As each _passion_ has its peculiar expression and style, the _improvvisatore_ must engrave on his mind, the _association_ of suitable expressions for every _feeling_; so, that every time he experiences or brings back to his memory a _sensation_, a _passion_, or an _idea_, he may also, simultaneously recall the words best suited to express them. He must acquire the faculty of bringing before his mind, all the scenes of nature--and the passions which spring from the heart of man; and, at the same time, possess language to convey them with eloquence. His imagination must be active, impetuous, or overwhelming, according to the objects which he intends to describe.