It is not the strongest of the species that survives, nor the most intelligent, but the one most responsive to change.  

我不认为我是个坏人。我只是生活方式不好。

除非某处的某人宁愿你不做这件事，否则这件事就不值得做。

"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."