心理学唯一有效的数据是可观察的行为。
The only valid data for psychology are observable behaviors.
风险管理不是要避免风险，而是要理解并减轻它们。
Sometimes we get sad about things and we don’t like to tell other people that we are sad about them. We like to keep it a secret. Or sometimes, we are sad but we really don’t know why we are sad, so we say we aren’t sad but we really are.
程序最重要的属性是它是否实现了用户的意图。
一个人倘若不为自己思考，那就从未思考过。