Tao Te Ching 81

Sincere words are not fine; fine words are not sincere. Those who are skilled in the Tao do not dispute about it; the disputatious are not skilled in it. Those who know the Tao are not extensively learned; the extensively learned do not know it.

The sage does not accumulate for himself. The more that he expends for others, the more does he possess of his own; the more that he gives to others, the more does he have himself.

With all the sharpness of the Way of Heaven, it injures not; with all the doing in the way of the sage, he does not strive.