Truthful words are not beautiful; beautiful words are not truthful. Good words are not persuasive; persuasive words are not good.
Other quotes by Lao Tzu
The sage does not hoard. The more he helps others, the more he benefits himself, The more he gives to others, the more he gets himself. The Way of Heaven does one good but never does one harm. The Way of the sage is to act but not to compete.