Tao Te Ching

Yet these two things, matter and spirit, so different in nature, have the same origin.   This unity is the mystery of mysteries, and the gateway to spirituality. (Location 15)

Matter is necessary to give form, but the value of reality lies in its immateriality.   Everything that lives has a physical body, but the value of a life is measured by the soul. (Location 91)

Too much light blinds the eye; too much noise deafens the ear; too many spices dull the taste; too much exercise weakens the body; the pursuit of great riches leads to ruin.   The wise attend to the inner truth of things and are not fooled by outward appearances. They ignore matter and seek the spirit. (Location 95)

Yet, by holding fast to the ancient Tao, the wise may grasp the present, because they understand the past.   This is a clue to the Tao. (Location 115)

All things are in process, rising and returning. (Location 130)

To know eternity is enlightenment; to ignore eternity is to invite calamity. (Location 132)

Here are the four fundamentals of true spirituality: recognize simplicity, cherish purity, reduce your possessions, diminish your desires. (Location 154)

They who follow the Tao, the Tao will guide. (Location 192)

The relation of these things— self-display, self-inflation, and self-assertion— to the Tao is the same as fat to lean meat.   They are unhealthy excesses, (Location 198)

Failing to control himself, he lost the control of the empire. (Location 218)