What is most perfect seems to be incomplete; But its utility is unimpaired. What is most full seems to be empty; But its usefulness is inexhaustible. What is most straight seems to be crooked. The greatest skills seems to be clumsy. The greatest eloquence seems to stutter. Hasty movement overcomes cold, But tranquility overcomes heat. By being greatly tranquil, One is qualified to be the ruler of the world.