Out of the crooked timber of humanity, no straight thing was ever made.
人性这根曲木，决然造不出任何笔直的东西。
We die. That may be the meaning of life. But we do language. That may be the measure of our lives.
释义：开始时做得好的人确实很多，但能够坚持到底的人却很少。这句话揭示了人们在做事过程中往往容易虎头蛇尾，难以善始善终。