Be gentle to all and stern with yourself.
Who seeks shall find.
Only the educated are free.
Things do not happen. Things are made to happen.
You never know what motivates you.
To know oneself, one should assert oneself.
Always desire to learn something useful.
Begin to be now what you will be hereafter.
Never complain and never explain.
Well done is better than well said.
Daoist thought is the root of science and technology in China.