Those who know do not speak; Those who speak do not know. Stop up the openings, Close down the doors, Rub off the sharp edges. Unravel all confusion. Harmonize the light, Give up contention: This is called finding the unity of life.
The guiding light of Lao Tzu: a new translation and commentary on the Tao teh ching (ed. Theosophical Pub House, 1982)