Tao Te Ching – Lao Tzu – chapter 5
Heaven and earth are ruthless;
They see the ten thousand things as dummies.
The wise are ruthless;
They see the people as dummies.
The space between heaven and earth is like a bellows.
The shape changes but not the form;
The more it moves, the more it yields.
More words count less.
Hold fast to the center.
(translation by Gia-fu Feng and Jane English)