A commander in chief ought to say to himself several times a day: If the enemy should appear on my front, on my right, on my left, what would I do? And if the question finds him uncertain, he is not well placed, he is not as he should be, and he should remedy it.
Is there any one maxim which ought to be acted upon throughout one's whole life? Surely the maxim of loving kindness is such: Do not unto others what you would not they should do unto you.