Lao Tzu 《Tao Te Ching》 81. The Sage

Honest people use no rhetoric;
Rhetoric is not honesty.
Enlightened people are not cultured;
Culture is not enlightenment.
Content people are not rich;
Riches are not contentment.

So the sage does not serve himself;
The more he does for others, the more he is satisfied;
The more he gives, the more he receives.
Nature flourishes at the expense of no one;
So the sage benefits all men and contends with none.