Friends must always be treated as if one day they might be enemies.

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A general dissolution of principles and manners will more surely overthrow the liberties of America than the whole force of the common enemy.

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It is easier to forgive an enemy than to forgive a friend. -William Blake

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You may find the worst enemy or best friend in yourself.- English Proverb

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A military man can scarcely pride himself on having smitten a sleeping enemy; it is more a matter of shame, simply, for the one smitten. Isoroku Yamamoto

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Before a man can bind the enemy, he must know there is nothing binding him.

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The best revenge is not to be like your enemy.

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If you know the enemy and know yourself, you need not fear the result of a hundred battles ― Sun Tzu

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Remember: Plot is no more than footprints left in the snow after your characters have run by on their way to incredible destinations. - Ray Bradbury

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Comfort is the enemy of achievement.

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