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If you're not stubborn, you'll give up on experiments too soon. And if you're not flexible, you'll pound your head against the wall and you won't see a different solution to a problem you're trying to solve.

印染時織品用青色染料就變成青色，用黃色染料就變成黃色。隨著染料的變化，織品的色彩也變化，放入多種染料則呈現出五顏六色的變化。所以對于印染不可不慎重！說明每個人的思想和意識形態是隨著環境的變化而變化的，每個人都會受到環境的影響。在一個人際關系復雜的環境中，人的思想也會變得復雜；而在人際關系相對簡單的環境下，人的思想也會相對純樸，什么樣的環境造就什么樣的人。

Every man has his secret sorrows which the world knows not; and often times we call a man cold when he is only sad.

The quest for understanding is the noblest pursuit of the human spirit.

There is no escape, only different kinds of prisons.