What causes us to like new acquaintances is not so much weariness of our old ones, or the pleasure of change, as disgust at not being sufficiently admired by those who know us too well, and the hope of being admired more by those who do not know so much about us.
What men have called friendship is only a social arrangement, a mutual adjustment of interests, an interchange of services given and received; it is, in sum, simply a business from which those involved propose to derive a steady profit for their own self-love.
