Imam Ali (AS) said, How truthful is a persons testimony against himself and what witness is there against him better than his own deeds?! A man is not recognized except by his knowledge, just as a strange tree is not known except when it bears fruit, thus the fruits are evidence of its origins. The excellence of every person is known by his merit, and thus the honourable one is distinguished by his morals and the vile one is disgraced by his wickedness.