Do not use a cannon to kill a mosquito.
When you have faults, do not fear to abandon them.
There may be men who act without understanding why. I do not. To listen much, pick out the good and follow it; to see much and ponder it: this comes next to understanding.
When three persons work together, each can be the teacher in some aspects
A fool marvels at rare things, but a wise man at common ones.
A man living without conflicts, as if he never lives at all.