悔既往之失，亦要防将来之非。
解释：既要追悔以往的过失，也要预防将来可能发生的错误。
自由的代价是永恒的警惕。
Success is no accident. It is hard work, perseverance, learning, studying, sacrifice and most of all, love of what you are doing.
The most dangerous phrase in business is "We've always done it this way."
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。
When I sing, I feel like I’m in a different world, a world where anything is possible.