We should avoid the fault which makes a sentence appear not full enough, on account of something defective, tho this is rather a vice of obscurity than want of ornament in speech.  But when it is done for some particular reason, then it becomes a figure of speech.  We should likewise be aware of tautology, which is a repetition of the same word or thought, or the use of many similar words or thoughts.  Tho this does not seem to have been much guarded against by some authors of great note, it is, notwithstanding, a fault, and Cicero himself often falls into it.

Similarity of expression is a still greater vice, because the mind is wearied by lack of the graces of variety, and the discourse being all of one color, shows a great deficiency in the art of oratory.  It, besides, creates loathing, and at length becomes insupportable, both to the mind and ear, through the tedious repetition of the same cold thoughts, figures, and periods.

There is another fault, that of being over-nice, which is caused by extreme anxiety to be exact, but which is as far distant from exactness as superstition is from true religion.  In short, every word that contributes neither to perspicuity nor ornament, may be called vicious.

A perverse affectation is faulty in all respects.  All bombast, and flimsiness, and studied sweetness, and redundancies, and far-fetched thoughts, and witticisms, fall under the same denomination.  Thus whatever stretches beyond the bounds of perfection, may be called affectation, and this happens as often as the genius is lacking in judgment, and suffers itself to be deceived by an appearance of good.  It is the worst of vices in matters of eloquence, for even when others are avoided, this is sought after, and its whole trespass is against elocution.  There are vices incident to things, which come from being devoid of sense, or from being common, or contrary, or unnecessary, and a corrupt style consists principally in impropriety of words, in their redundancy, in their obscure import, in a weak composition, and in a puerile hunting after synonymous or equivocal words.  But every perverse affectation is false in consequence of its idea, tho not everything that is false is an affectation, the latter saying a thing otherwise than as nature will have it, and than it ought to be, and than is sufficient.

USE OF VIVID DESCRIPTION

There can not be a greater perfection than to express the things we speak of in such lively colors as to make them seem really to take place in our presence.  Our words are lacking in full effect, they assume not that absolute empire they ought to have, when they strike only the ear, and when the judge who is to take cognizance of the matter is not sensible of its being emphatically exprest.