As there are helps, so there are hinderances to good thinking. Petty cares, executive duties, noises in the same room, or in the next room, or upon the street, are well-known examples. Their name is legion, and their cost is enormous if they come from manufacturing establishments near the school. A word about the extra-mural music which emanates from vile machinery on the streets is not out of place in this connection. An English writer asserts that the organ-grinders of London have done more in the last twenty years to detract from the quality and quantity of the higher mental work of the nation than any two or three colleges at Oxford have effected to increase it. A mathematician estimates the cost of the increased mental labor these street-musicians have imposed upon him and his clerks at several thousand pounds’ worth of first-class work, for which the government actually paid in added length of the time needed for his calculations.
Our fellow-men.
In matters of this kind every man must be a law unto himself. Since no two human beings are exactly alike, but each is a new creation fresh from the hands of the Creator, it follows that each person must study his own peculiarities, form his own habits of work, and acquire the power to think in the midst of the circumstances in which he is placed. By resolute effort the mind can ignore many a hinderance and distraction. The best stimulus from without comes from our fellow-men. “Our minds need the stimulus of other minds, as our lungs need oxygen to perform their functions.” At school the stimulus comes from classmates, from those in the higher and lower classes, but above all else, from the best books and the best teachers. In the life beyond the school the stimulus comes from the daily contact and competition with others, from conversation and discussions with those who think, from communion with the best books, with nature, and with nature’s God.
Sources of stimulus.
After the powers of the mind have been awakened and disciplined, stimulus and inspiration may come from ten thousand sources. Silence and solitude, city and country, business and pleasure, observation and travel, observatories and laboratories, libraries and museums, nature and art, poetry and prose, fiction and history, may each in turn serve as a spur to creative, inventive, and productive thinking, as an incentive to original research, fruitful investigation, and profitable reasoning. Among all the sources of stimulation, the good teacher and the good book take superlative rank.