君子之言,信而有征,故怨远于其身。小人之言,僭而无征,故怨咎及之。· The words of a gentleman are of trust based on evidence,hence he avoids complaints. The words of an inferior man are of falsehood without evidence,hence he is troubled with complaints.
(Zuo Qiuming [of the Spring and Autumn Period]: Zuo's Commentary)