文字周围的沉默与文字本身同样重要。

Positive psychology is as concerned with strength as with weakness, as interested in building the best things in life as in repairing the worst.

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

在黑暗中，我们找到了自己人性的光芒。

We are our past.

计算机科学使计算机感到尴尬。