“The rest naturally are offended, for nothing so enrages the mediocre mind as to be compelled to admit to itself its own inferiority. Consequently, they consign book, author, and reader conjointly to Satan. So much easier is it to condemn than to refute, or to learn.”
The early success of many young students does not permit them to observe that they often have departed from the rules of the Art. As they have escaped punishment for their errors, they remain unacquainted with the dangers to which they were exposed. Constant good fortune finally makes them over-confident and they do not suspect it necessary to change their measures, even when in the presence of an able foe.
Thus, the youthful tyro, inconsiderate, inconsistent, and turbulent, and oblivious to the innumerable dangers by which he is surrounded, plays his pieces hither and thither, as fancy and inclination dictate, culling bouquets of the most gorgeous flowers of the imagination; thoughtless of the future and perfectly happy because he cannot reflect.
To reason exactly, the student first must rid his mind of all preconceived notions; he must regard the matter under consideration as a blank sheet of paper, upon which nothing is to be written save those things which by the processes of logic and demonstration, are established as facts.
There is much difference between the Art of Logic and mere conjecture.
The calculations of arithmeticians, though rigorous and exact, are never difficult; because they relate to known quantities and to the palpable objects of nature. But when it is required to argue from combining circumstances, the least ignorance of uncertain and obscure facts breaks the chain and we are deceived every moment.
This is no defect of the understanding, but error arising from plausible ideas, which wear the face of and are too quickly accepted for truth. A long chapter can be written on the different ways in which men lose themselves in their conjectures. Innumerable examples of this are not wanting, and all because they have suffered themselves to be hurried away and thus to be precipitate in drawing their conclusions.
The part that the General, whether in Chess-play or in Warfare, has to act, always is more difficult because he must not permit himself the least mistake, but is bound to behave with prudence and sagacity throughout a long series of intricate processes. A single false deduction, or a movement of the enemy unintelligible to a commander, may lead him to commit an irremediable error; and in cases wherein the situation is beyond comprehension, his ignorance is invincible.
For however extensive the human mind may be, it never is sufficiently so to penetrate those minute combinations necessary to be developed in order to foresee and regulate events, the sequence, utility and even existence of which, depend upon future contingencies.