So goes the wise but rarely followed advice. (See Eric Posner for some good reasons if you remain unconvinced.) Emerson’s take, through, is my favorite:
And why must the student be solitary and silent? That he may become acquainted with his thoughts. If he pines in a lonely place, hankering for the crowd, for display, he is not in the lonely place; his heart is in the market; he does not see; he does not hear; he does not think. But go cherish your soul; expel companions; set your habits to a life of solitude; then, will the faculties rise fair and full within, like forest trees and field flowers; you will have results, which, when you meet your fellow-men, you can communicate, and they will gladly receive. Do not go into solitude only that you may presently come into public. Such solitude denies itself; is public and stale. The public can get public experience, but they wish the scholar to replace to them those private, sincere, divine experiences, of which they have been defrauded by dwelling in the street. It is the noble, manlike, just thought, which is the superiority demanded of you, and not crowds but solitude confers this elevation. Not insulation of place, but independence of spirit is essential, and it is only as the garden, the cottage, the forest, and the rock, are a sort of mechanical aids to this, that they are of value. Think alone, and all places are friendly and sacred. The poets who have lived in cities have been hermits still. Inspiration makes solitude anywhere. Pindar, Raphael, Angelo, Dryden, De Stael, dwell in crowds, it may be, but the instant thought comes, the crowd grows dim to their eye; their eye fixes on the horizon, — on vacant space; they forget the bystanders; they spurn personal relations; they deal with abstractions, with verities, with ideas. They are alone with the mind.Ralph Waldo Emerson, “Literary Ethics” (1838)