Some birds are not close, because they are too bright.

人生太重要，不能严肃地谈论它。

Optimism is not just a trait; it's a skill that can be cultivated.

生活的美在于细节。

Mathematics is the most beautiful and most powerful creation of the human spirit.

"A key insight in computational learning theory is that the complexity of a learning problem is determined by the complexity of the hypothesis space and the amount of data available."

最好带着某种激情的全部荣耀勇敢地进入另一个世界，而不是随着年龄的增长凄凉地褪色和枯萎。