It is a meakness of human nature.We know that if we laud our friend he will sing an eulogy on us the next minute,so it only natural we should do it,after all.

• 众所周知：我们若赞美自己的朋友，他忙就会唱出赞美我们的颂歌，所以我们无论如何都应该赞美朋友，这再自然不过了！。