The essence of computational thinking is abstraction and automation.

表演的本质是在想象的环境中真实地生活。

The degree of slowness is directly proportional to the intensity of memory. The degree of speed is directly proportional to the intensity of forgetting.

编程的艺术是组织复杂性的艺术，是掌握多样性并尽可能有效地避免其混乱的艺术。