推古验今，所以不惑。先揆后度，所以应卒。
释义：推究古代的事例来验证今天的情况，从而避免困惑；先揣度事情的始末，后仔细考虑，从而应对突发情况。这是对借鉴历史、谨慎行事的智慧的强调。
沉默可能是最响亮的尖叫。
No testimony is sufficient to establish a miracle unless the testimony be of such a kind that its falsehood would be more miraculous than the fact which it endeavors to establish.
Think of all the psychic energy expended in seeking a fundamental distinction between "algorithm" and "program".