"YOU cannot love a thing without wanting to fight for it. You cannot fight without something to fight for. To love a thing without wishing to fight for it is not love at all; it is lust. It may be an airy, philosophical, and disinterested lust… but it is lust, because it is wholly self-indulgent and invites no attack. On the other hand, fighting for a thing without loving it is not even fighting; it can only be called a kind of horse-play that is occasionally fatal. Wherever human nature is human and unspoilt by any special sophistry, there exists this natural kinship between war and wooing, and that natural kinship is called romance. It comes upon a man especially in the great hour of youth; and every man who has ever been young at all has felt, if only for a moment, this ultimate and poetic paradox. He knows that loving the world is the same thing as fighting the world."
~G.K. Chesterton: in Appreciations and Criticisms of the Works of Charles Dickens, Chap. IV.—NICHOLAS NICKLEBY.