相信你能根据自己的积累把下列名言填充完整。     

(1)言必信，________                              。     

(2)与朋友交，                                            。     

(3)己所不欲，                                            。   

(4)                                 ，金石为开。   

(5)爱人者，                       ；敬人者，________        。   

(6)老吾老，                       ；幼吾幼，________        。