The challenge in computational learning theory is to understand the capabilities and limitations of learning algorithms.

The greatest weapon against stress is our ability to choose one thought over another.

译文：一句话不小心就会招致祸患，一件事不小心就会玷污名节。赏析：口无遮拦的人迟早会给自己带来祸患，行为不检点之人更会玷污自己的名节。我们的一言一行不仅关乎名节，更关乎性命。

The beauty of cinema is that it allows us to explore the depths of human emotion and experience in a way that no other art form can.

控制的挑战在于在存在不确定性的情况下使系统工作。

The most secure encryption is the one you don't use.

黄莺和鲜花尚且担心春光流逝，怎么可以白白虚度大好时光？