A friend, therefore, is a sort of paradox in nature. I who alone am, I who see nothing in nature whose existence I can affirm with equal evidence to my own, behold now the semblance of my being, in all its height, variety, and curiosity, reiterated in a foreign form; so that a friend may well be reckoned the masterpiece of nature.
Ralph Waldo EmersonAnd truly it demands something god like in him who has cast off the common motives of humanity, and has ventured to trust himself for a taskmaster. High be his heart, faithful his will, clear his sight, that he may in good earnest be doctrine, society, law, to himself, that a simple purpose may be to him as strong as iron necessity is to others!
Ralph Waldo Emerson