就是说做不善的事情要受到惩罚，做善事会得到奖赏。
Challenges are opportunities in disguise. Embrace them, and you’ll find growth where others see obstacles.
一个物理符号系统具备一般智能行为的必要和充分条件。
别难过……世界上有许多人还不知道他们到底是谁或什么。
The worst prison is not the one with walls and bars, but the one in our minds.
Keep cool, but care.