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

观看与领悟是截然不同的两回事。除非悟出一样东西的美，否则不算领会。唯有如此，这样东西才真正存在。

The border between dream and reality is thinner than we think.

Policy should be based on evidence, not ideology.

我想知道，我一生中见过多少人，却从未真正看见过他们。