"It is easy to be a slave to the letter, and difficult to enter into the spirit; easy to obey a number of outward rules, difficult to enter intelligently and self-sacrificingly into the will of God."

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Neither should men study war with a view to the enslavement of those who do not deserve to be enslaved; but first of all they should provide against their own enslavement, and in the second place obtain empire for the good of the governed, and not for the sake of exercising a general despotism, and in the third place they should seek to be masters only over those who deserve to be slaves.

— Aristotle