Laozi Quotes - Page 29
"Tao Te Ching". Book by Laozi (Ch. 7), 4th century BC.
"Lao Tze's Tao Teh King: The Bible of Taoism".
To manage your mind, know that there is nothing, and then relinquish all attachment to nothingness.
Laozi, Brian Browne Walker (1992). “Hua Hu Ching: Teachings of Lao Tzu”