“The great art to learn much,” says Locke, “is to undertake a little at a time.” Dr. Johnson, the celebrated English writer, has very forcibly observed, that “all the performances of human art, at which we look with praise or wonder, are instances of the resistless force of perseverance: it is by this that the quarry becomes a pyramid, and that distant countries are united by canals. If a man was to compare the effect of a single stroke with the pick-axe, or of one impression of a spade, with the general design and last result, he would be overwhelmed with the sense of their disproportion; yet those petty operations, incessantly continued, in time surmount the greatest difficulties; and mountains are levelled, and oceans bounded by the slender force of human beings. It is therefore of the utmost importance that those who have any intention of deviating from the beaten roads of life, and acquiring a reputation superior to names hourly swept away by time among the refuse of fame, should add to their reason and their spirit the power of persisting in their purposes; acquire the art of sapping what they cannot batter; and the habit of vanquishing obstinate resistance by obstinate attacks.” It is activity of mind that gives life to the most dreary desert, converts the solitary cell into a social world, gives immortal fame to genius, and produces master-pieces of ingenuity to the artist. The mind feels a pleasure in the exercise of its powers proportioned to the difficulties it meets with, and the obstacles it has to surmount. When Apelles was reproached for having painted so few pictures, and for the incessant anxiety with which he retouched his works, he contented himself with this observation, “_I paint for posterity_.” The inactivity of monastic solitude, the sterile tranquillity of the cloister, are ill suited to those who, after a serious preparation in retirement, and an assiduous examination of their own powers, feel a capacity and inclination to perform great and good actions for the benefit of mankind. Princes cannot live the lives of monks; statesmen are no longer sought for in monasteries and convents; generals are no longer chosen from the members of the church. Petrarch, therefore, very pertinently observes, “that solitude must not be inactive, nor leisure uselessly employed. A character indolent, slothful, languid, and detached from the affairs of life, must infallibly become melancholy and miserable. From such a being no good can be expected; he cannot pursue any useful science, or possess the faculties of a great man.”