心理学的真理存在于实践经验中。
Psychological truth is found in practical experience.
The most important thing in a programming language is the semantics, not the syntax.
The 40% solution: The capacity to increase happiness is within our personal control.
Try to learn something about everything and everything about something.  
The market is an example of a spontaneous order: a system which is the product of human action but not of human design.
唯一真正的光是灵魂的光。