应对不自由世界的唯一方法是变得如此绝对自由，以至于你的存在本身就是一种反叛。
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
It’s not about the car. It’s about the person driving the car.
The way positive reinforcement is carried out is more important than the amount.
学习的最好方法是通过实践和犯错。
如果我们为之奋斗，煤炭的未来是光明的。