Letter 48 — On Quibbling as Unworthy of the Philosopher (§3)

“This fellowship, maintained with scrupulous care, which makes us mingle as men with our fellow-men and holds that the human race have certain rights in common, is also of great help in cherishing the more intimate fellowship which is based on friendship, concerning which I began to speak above. For he that has much in common with a fellow-man will have all things in common with a friend.”