If doubtful whether to end with "yours faithfully," or "yours truly," or "yours most truly," &c. (there are at least a dozen varieties, before you reach "yours affectionately"), refer to your correspondent's last letter, and make your winding-up at least as friendly as his: in fact, even if a shade more friendly, it will do no harm!
Lewis CarrollBe sure the safest rule is that we should not dare to live in any scene in which we dare not die.
Lewis CarrollTwas brillig, and the slithy toves Did gyre and gimble in the wabe: All mimsy were the borogoves, And the mome raths outgrabe.
Lewis Carroll"She can't do sums a bit!" the Queens said together, with great emphasis. "Can you do sums?" Alice said, turning suddenly on the White Queen, for she didn't like being found fault with so much. The Queen gasped and shut her eyes. "I can do Addition, if you give me time-but I can do Subtraction, under any circumstances!"
Lewis Carroll