Heaven is eternal and Earth everlasting. They can be eternal and everlasting because they do not exist for themselves, And for this reason can exist forever.
LaoziNothing in the world is as soft and yielding as water. Yet for dissolving the hard and inflexible, nothing can surpass it. The soft overcomes the hard; the gentle overcomes the rigid. Everyone knows this is true, but few can put it into practice. Therefore the Master remains serene in the midst of sorrow. Evil cannot enter his heart. Because he has given up helping, he is people's greatest help. True words seem paradoxical.
Laozi