Third: Whatever most decreases chance of betrayal is best.
To form standing army most decreases the chance of betrayal.
Hence, to form standing army is best, or least dangerous.
This illustrates how intricately interwoven is Argument with other forms of composition, and how easily one may overlook the fact that he is reading or writing it.
Formally speaking, the difference between Exposition and Argument is the difference between peace and war. One is a hidden and the other an avowed struggle. In Exposition the writer declares; in Argument he defends. In the former there is no necessary endeavor to convince. The writer concerns himself with setting forth facts, views, or theories; he nominally deals with statement pure and simple. In the latter he attempts to enforce assent to his proposition; to convince is his declared and primary object. Exposition is the teacher; Argument, the soldier.
The danger of Argument is that of all contest. To make an effort to effect a given thing, to endeavor to enforce a view, is of course to expose one’s self to the chance of arousing opposition. It is to invite attack, and to run the risk of defeat. For this reason it is necessary to use not a little shrewdness in deciding whether it is best to put what one has to say into the form of declared argument. Often it is wiser to endeavor to produce an exposition so clear that it shall carry with it the conclusion which the writer desires to establish. It is at least safe to assert that in writings meant to convince, the more fully the appearance of not arguing can be maintained the more satisfactory will be the effect. The reader will certainly go as far as he can be made to suppose himself and not the author to be drawing conclusions. Most editorial argumentative writing, and especially that which deals with political questions, is almost of necessity disguised in a semblance as close to Exposition as possible. Where passion is aroused, prejudices excited, and the mind of the reader armed against attempts to convince, whatever is done must be done in a way calculated to soothe rather than to excite.
When Argument avowed and formal is attempted, no pains should be spared to make it irresistible. Reasoning which does not succeed is the strongest presumption against the proposition it seeks to defend. Indeed, logic which fails seems almost to establish the truth of the opposite proposition. “He that taketh the sword shall fall by the sword,” and he who advances an argument must either prevail by it or fall altogether. The proposition which before it is argued is viewed at worst with indifference is discredited and disbelieved when once an attempt to establish its credibility has been made and has failed.
The strength of an argument lies in that quality which is called logical accuracy. To cover the whole subject of reasoning minutely it would be necessary to go over the entire field of formal logic; but here we must content ourselves with considering points which are essential and which pretty fairly cover the needs of argumentative composition in a literary sense.
Before beginning a chain of reasoning it is wise to fix what is named the burden of proof. In other words it is well to decide how much one is called upon to prove. It is important to know whether the presumption lies for or against the proposition at issue, to be clear what may be assumed. In many cases this has no especial practical bearing, but it is well to be sure where one stands. It is always easier to defend than to attack, and in so far as a writer can put from him the burden of proof, in so far he has rendered his task lighter. The received theory and the existing state of things have in their favor a presumption which may be advanced by him who argues in their favor and which must always be done away with by him who reasons against them. The writer who attacks civilization, for instance, who decries the existing religion or the value of literature, has upon him the burden of proof; while he who defends them has the advantage of an affirmative assumption. The former is called upon to produce arguments to prove his claim; the latter need do no more than to refute the reasoning of his opponent. On the one hand it is a question of attack; while on the other it is a matter of defense.