出自先秦《荀子·不苟》。君子加强道德修养没有比“诚”更重要的，达到了“诚”的要求也就到了修身养性的最高境界了。
The study of truth requires a considerable effort - which is why few are willing to undertake it out of love of knowledge - despite the fact that God has implanted a natural appetite for such knowledge in the minds of men.
The best leaders are those who can see around corners and anticipate what's coming next.
The key to security is not to trust anyone, including yourself.