Who said "The Master's tongue is at rest; his eyes are active."?

This quote is attributed to Lao Tzu.

The Master's tongue is at rest; his eyes are active. - Lao Tzu

"The Master's tongue is at rest; his eyes are active."

Lao Tzu

Philosopher Chinese -604–-531

"The Tao that can be told is not the eternal Tao."

"When you realize there is nothing lacking, the whole world belongs to you."

"Do you have the patience to wait till the mud settles and the water is clear?"

"Nature does not hurry, yet everything is accomplished."