What is most personal is most universal.
The people who live in a golden age usually go around complaining how yellow everything looks.
一个好的数学家是能看到定理之间类比的人；一个伟大的数学家是能看到类比之间的类比的人。
It's on the strength of observation and reflection that one finds a way. So we must dig and delve unceasingly.
尊重自然，顺应自然。
把灯笼背在背上的人，有黑影遮住前路。
Be scrupulously truthful, even when truth is inconvenient, for it is more inconvenient when you try to conceal it.