Treating a person to a meal never fails， and is so easy to do. It’s powerful with old friends and a great way to make new friends.
Mathematics teaches us to think logically and to approach problems systematically.
The most valuable thing you can make is a mistake—you can't learn anything from being perfect.
To understand psychology, observe behavior in its natural context.
只有在非常害怕失去的一样东西的时候一个人才会说谎。《纯真博物馆》
自然界的法则是智慧的根本。