“ Through use, ” we also “have [our] perceptive powers trained to distinguish both right and wrong. ”
وَ ‹ بِٱلْمُمَارَسَةِ تَصِيرُ قُوَى إِدْرَاكِنَا مُدَرَّبَةً عَلَى ٱلتَّمْيِيزِ بَيْنَ ٱلصَّوَابِ وَٱلْخَطَإِ › .‏