The PAC learning framework provides a formal way to quantify the learnability of a concept class.

Literature is a fire that burns within us, a fire that consumes and purifies, a fire that illuminates and warms.

Sustainability is not a trend; it's a responsibility we owe to future generations.

现实不仅是能够被复制的东西，而且是总是已经被复制的东西。

投资中最重要的事情是在正确的时间处于正确的市场。