If your mind is at work, we're in danger of reproducing another cliche. If we can keep our minds out of it and our thoughts out of it, maybe we'll come up with something original.
“It is a grave matter to enter a war, without adequate military preparation; it may prove fatal to come into peace, without moral and religious preparation.”
“If we treated everyone we meet with the same affection we bestow upon our favorite cat, they, too, would purr.”