عَرَفْتُ الشَّرَّ لا لِلشَّرِّ لَكِنْ
لِتَوَقِّيهِ وَمَنْ لا يَعْرِفِ الشَّرَّ يَقَعْ فِيهِ
I knew evil not for evil's sake but
To avoid it, for who does not know evil falls into it
المصدر · Source: Attributed to Abu Dhar. Al-Isti'ab