生活是与未来的一系列碰撞；它不是我们曾经的总和，而是我们渴望成为的总和。
La vida es una serie de colisiones con el futuro; no es una suma de lo que hemos sido, sino de lo que anhelamos ser.
The writer’s life is a life of doubt.
不要让你的恐惧控制你。
In machine learning, the trade-off between bias and variance is crucial for achieving good generalization.
看着容易，要学会就很难；千万不要把容易得到的东西看得普通，就不知道珍惜。
The problem of the modern individual is not that he has too little choice, but that he has too much.
Children have real understanding only of that which they invent themselves, and each time that we try to teach them something too quickly, we keep them from reinventing it themselves.