如果你都不相信自己，没人会相信你。
If you do not believe in yourself, no one else will.
The true measure of a company's success is its impact on society, not just its bottom line.
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。