Under heaven all can see beauty as beauty only because there is ugliness. All can know good as good only because there is evil. Therefore having and not having arise together. Difficult and easy complement each other. Long and short contrast each other. High and low rest upon each other. Voice and sound harmonize each other. Front and back follow one another.
Don't imagine that you'll discover {the truth} by accumulating more knowledge. Knowledge creates doubt, and doubt makes you ravenous for more knowledge. You can't get full eating this way.
Every being in the universe is an expression of the Tao. It springs into existence, unconscious, perfect, free, takes on a physical body, lets circumstances complete it. That is why every being spontaneously honors the Tao. The Tao gives birth to all beings, nourishes them, maintains them, cares for them, comforts them, protects them, takes them back to itself, creating without possessing, acting without expecting, guiding without interfering. That is why love of the Tao is in the very nature of things.