生命短暂，但永远有时间保持礼貌。
对于非礼的事，上等到的士人根本不想；对于非礼的事，中等的士人从来不说；对于非礼的事，下等的士人紧闭门户。
"Deep learning is a form of machine learning that enables computers to learn from experience and understand the world in terms of a hierarchy of concepts."
思维就是行为。在显性言语中习得的肌肉习惯是隐性或内部言语（思维）的原因。
The truth about a person is often found in what they tried to hide.
Certainty of evidence does not lead to certainty of belief.