"In computational learning theory, the challenge is not just to learn, but to understand how learning is possible."

The beauty of the world has two edges, one of laughter, one of anguish, cutting the heart asunder.

The worth of a mental process is in its service to life.

每一本书都是一次旅程，每一次旅程都会改变我们。

To write is to breathe, to live, to exist.

【释义】：父亲不慈爱，子女就不会孝顺；兄长不友爱，弟弟便不会恭敬。