Before you begin to praise someone, remember this.

A great man was praised in front of a gathering, his good qualities were played up and his virtues magnified. "That is sufficient my friends" he interrupted his praisers, "You know only my virtues because you can see them easily. They are open, but you do not see the shortcomings of my heart and my hidden defects which I know, and it is because of this shame that my head is always bowed before Allah who knows me best."