Vigorous, diligent, and persevering application is essential to the attainment of excellence in every pursuit of man. It is undoubtedly a mistake to suppose that there is no original inequality in the mental faculties of different individuals. Probably, there is as great a disparity in their intellectual as in their physical conformation. But however false this extravagant theory may be there is another error far more common, and, practically, far more mischievous--the error of exaggerating the difference between the original energies of intellect, and of attributing to splendid and resistless genius those victories which are not to be achieved but by well directed and continued industry. It is in the infancy of life that the inequalities of original talent are most striking, and it is not strange that vanity, on the one hand, and indolent admiration, on the other, should hyperbolically extol these obvious advantages. In what this disparity consists it may not be easy to state with precision. But from an observation of many years, I venture to suggest that the chief natural superiority manifested by the favored few over their competitors in the intellectual conflict is to be found in the facility with which their attention is directed and confined to its proper subjects. That youth may be regarded as fortunate indeed who in early life can restrain his wandering thoughts and tie down his mind at will to the contemplation of whatever he wishes to comprehend and to make his own. A few moments of this concentrated application is worth days and weeks of a vague, interrupted, scattered attention. The first resembles the well-known manœuvre in strategy, so simple in its conception and yet so astonishing in its results, by which all the arms of a military force are made to bear upon a given point at the same moment. Everything here tells, because there is no power wasted, and none misapplied. Now let no one despair because he finds this effort to confine his attention difficult, or for a considerable length of time, impracticable. Nothing is more certain than that this power over the mind may be acquired. Let the attempt be repeated again and again--first short, afterwards (as the ability is increased) for longer periods, and success will ultimately follow. The habit of fixed attention will thus be created, and it is one of the peculiarities of all active habits, that in proportion to the difficulty with which they were produced, is their inveteracy, when once thoroughly formed. Thus, it not unfrequently happens that the advantages with which the individual commenced his career, who was naturally alert and devoted in his attention to every subject as it was successively presented to his notice, have not enabled him to contend successfully with him who, by hard efforts, has chained down his wandering thoughts and dissipated faculties to the habit of attention.