The difference between a man who is led by opinion or emotion and one who is led by reason. The former, whether he will or not, performs things of which he is entirely ignorant; the latter is subordinate to no one, and only does those things which he knows to be of primary importance in his life, and which on that account he desires the most; and therefore I call the former a slave, but the latter free.
David HumeIt is not contrary to reason to prefer the destruction of the whole world to the scratching of my finger. It is not contrary to reason for me to choose my total ruin, to prevent the least uneasiness of an Indian, or person wholly unknown to me. It is as little contrary to reason to prefer even my own acknowledged lesser good to my greater, and have a more ardent affection for the former than the latter.
David HumeThe Crusades - the most signal and most durable monument of human folly that has yet appeared in any age or nation.
David HumeWhere ambition can cover its enterprises, even to the person himself, under the appearance of principle, it is the most incurable and inflexible of passions
David Hume