I'm not perfect, and I don't pretend to be.

I don't regret anything I've ever done in my life, any choice that I've made. But I'm consumed with regret for the things I didn't do.

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。