The one who is pleased with himself cannot see his own faults but if he were to know the merits of others, he would cover up (and feel ashamed of) the faults and flaws that are in him
المصدر : غرر الحكم ودرر الكلم
الِافْتِخَارُ مِنْ صِغَرِ الْأَقْدَارِ
Boastfulness stems from the smallness of [one’s] status [and worth]
المصدر : غرر الحكم ودرر الكلم
رِضَاكَ عَنْ نَفْسِكَ مِنْ فَسَادِ عَقْلِكَ
Your satisfaction with yourself is an indication of the corruption of your mind