"Purge your heart by fasting and discipline," answered Lao Tzŭ. "Wash your soul as white as snow. Discard your knowledge. Tao is abstruse and difficult of discussion. I will try, however, to speak to you of its outline. "Light is born of darkness. Classification is born of formlessness. The soul is born of Tao. The body is born of the vital essence. "Thus all things produce after their kind. Creatures with nine channels of communication are born from the womb. Creatures with eight are born from the egg. Of their coming there is no trace. In their departure there is no goal. No entrance gate, no dwelling house, they pass this way and that, as though at the meeting of cross-roads. "Those who enter herein become strong of limb, subtle of thought, and clear of sight and hearing. They suffer no mental fatigue, nor meet with physical resistance. "Heaven cannot but be high. Earth cannot but be broad. The sun and moon cannot but revolve. All creation cannot but flourish. To do so is their Tao. "But it is not from extensive study that this may be known, nor by dialectic skill that this may be made clear. The true Sage will have none of these. It is in addition without gain, in diminution without loss, that the true Sage finds salvation. "Unfathomable as the sea, wondrously ending only to begin again, informing all creation without being exhausted, the Tao of the perfect man is spontaneous in its operation. That all creation can be informed by it without exhaustion, is its Tao. "In the Middle Kingdom there are men who recognise neither positive nor negative. They abide between heaven and earth. They act their part as mortals, and then return to the Cause. "From that standpoint,

He who stands on his tiptoes does not stand firm; he who stretches his legs does not walk (easily). (So), he who displays himself does not shine; he...

When the mother is found, we know what her children should be. When one knows that he is his mother's child, and proceeds to guard (the qualities of) ...