In every person, there is an abyss. Sometimes you look into it, and sometimes you don’t.

Leadership is about inspiring people to do things they never thought they could.

译文：势单力薄容易受到损害，人多势众则不容易被摧毁。

我从十五岁开始致力于学习，三十岁便能自立于社会了，四十岁对各种事理不再迷惑不解，五十岁懂得了自然界的规律，六十岁对听到的事情能领会贯通，并能辨别是非真伪，七十岁时做事能随心所欲，但又不会超出礼法的规范。