Human nature and disposition

خَلَقَ ٱلْإِنسَـٰنَ مِن نُّطْفَةٍ فَإِذَا هُوَ خَصِيمٌ مُّبِينٌ

He created man from a sperm-drop; then at once he is a clear adversary.

قُلْ كُلٌّ يَعْمَلُ عَلَىٰ شَاكِلَتِهِۦ فَرَبُّكُمْ أَعْلَمُ بِمَنْ هُوَ أَهْدَىٰ سَبِيلًا

Say, "Each works according to his manner, but your Lord is most knowing of who is best guided in way."