I'm not afraid of failure because it's part of success.
美国优先!
If everything was perfect, you would never learn and you would never grow.
The real danger is not that computers will begin to think like men, but that men will begin to think like computers.
人生短暂,不要在消极上浪费时间。
两个物体的相互作用力总是大小相等,方向相反,同时出现或消失且作用于同一直线上。