The value of knowledge and understanding ('ilm)

وَتِلْكَ ٱلْأَمْثَـٰلُ نَضْرِبُهَا لِلنَّاسِ ۖ وَمَا يَعْقِلُهَآ إِلَّا ٱلْعَـٰلِمُونَ

And these examples We present to the people, but none will understand them except those of knowledge.