孔子说:“有益的朋友有三种,有害的朋友有三种。与正直的人交朋友、与诚实的人交朋友、与见多识广的人交朋友,有益处;与走邪门歪道的人交朋友、与谗媚奉迎的人交朋友、与花言巧语的人交朋友,有害处。”
"A good detective listens to the silence as much as the noise."
The PAC learning framework provides a formal way to quantify the learnability of a concept class.
The true poet is a man who is always in love with life.