最糟糕的监狱不是有墙和栏杆的监狱，而是我们思想中的监狱。

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.

Every life is in many days, day after day. We walk through ourselves, meeting robbers, ghosts, giants, old men, young men, wives, widows, brothers-in-love, but always meeting ourselves.

In machine learning, the trade-off between bias and variance is crucial for achieving good generalization.