To realize that our knowledge is ignorance, This is a noble insight. To regard our ignorance as knowledge, This is mental sickness. Only when we are sick of the sickness Shall we cease to be sick. The Sage is not sick, being sick of sickness; This is the secret of health.
The Tao can't be perceived. Smaller than an electron, it contains uncountable galaxies. If powerful men and women could remain centered in the Tao, all things would be in harmony. The world would become a paradise. All people would be at peace, and the law would be written in their hearts. When you have names and forms, know that they are provisional. When you have institutions, know where their functions should end. Knowing when to stop, you can avoid any danger. All things end in the Tao as rivers flow into the sea.
Do nondoing, strive for nonstriving, savor the flavorless, regard the small as important, make much of little, repay enmity with virtue; plan for difficulty when it is still easy, do the great while it is still small. The most difficult things in the world must be done while they are easy; the greatest things in the world must be done while they are small.
When people see some things as beautiful, other things become ugly. When people see some things as good, other things become bad. Being and non-being create each other. Difficult and easy support each other. Long and short define each other. High and low depend on each other. Before and after follow each other. Therefore the Master acts without doing anything and teaches without saying anything. Things arise and she lets them come; things disappear and she lets them go. She has but doesn't possess, acts but doesn't expect. When her work is done, she forgets it. That is why it lasts forever.
My teachings are easy to understand and easy to put into practice. Yet your intellect will never grasp them, and if you try to practice them, you'll fail. My teachings are older than the world. How can you grasp their meaning? If you want to know me, look inside your heart.
Seal the openings, shut the doors, and until your last day you will not be exhausted. Widen the openings, interfere, and until your last day you will not be safe.