Ratmachines.com

Great completion seems incomplete;
Yet its usefulness is never exhausted.
Great usefulness seems to be empty;
Yet its usefulness is never used up.
Great straightness seems to be bent.
Great skill seems to be clumsy.
Great eloquence seems to stammer;
Great surplus seems to be lacking.
Activity overcomes cold;
Tranquility overcomes heat.
If you're quiet and tranquil you can become the ruler of the world.