道德經 Tao Te Ching : XIV 道其上不皦 、其下不昧 。 繩繩不可名 、復歸於無物 。 是謂無狀之狀 、無物之象 、是謂惚恍 。 迎之不見其首 、隨之不見其後 。 Its upper part is not dazzling;
Its lower part is not obscure. Dimly visible, it cannot be named; And returns to that which is without substance. This is called the shape that has no shape;
The image that is without substance;
This is called indistinct and shadowy. Go up to it and you will not see its head;
Follow behind it and you will not see its rear.