Tao Te Ching · Ch. 56

知者不言,言者不知。塞其兌,閉其門,挫其銳,解其紛,和其光,同其塵,是謂玄同。故不可得而親,不可得而疏;不可得而利,不可得而害;不可得而貴,不可得而賤。故為天下貴。

Zhī zhě bù yán, yán zhě bù zhī. Sāi qí duì, bì qí mén, cuò qí ruì, jiě qí fēn, hé qí guāng, tóng qí chén, shì wèi xuán tóng. Gù bù kě dé ér qīn, bù kě dé ér shū; Bù kě dé ér lì, bù kě dé ér hài; Bù kě dé ér guì, bù kě dé ér jiàn. Gù wéi tiān xià guì.

Those who know do not speak; those who speak do not know. Close the openings, shut the gates, blunt the sharp edges, untangle the knots, soften the glare, settle into the dust — this is called the Mysterious Union. Therefore the sage cannot be drawn close or held at a distance, cannot be benefited or harmed, cannot be honored or disgraced. Because of this, the sage is the most honored thing under heaven.

— Tao Te Ching 56

Source: Wang Bi edition (Chinese) + Hanyu Pinyin transliteration