Quran verses about Reason and reflection

وَمَثَلُ ٱلَّذِينَ كَفَرُوا۟ كَمَثَلِ ٱلَّذِى يَنْعِقُ بِمَا لَا يَسْمَعُ إِلَّا دُعَآءً وَنِدَآءً صُمٌّۢ بُكْمٌ عُمْىٌ فَهُمْ لَا يَعْقِلُونَ ۝١٧١

The example of those who disbelieve is like that of one who shouts at what hears nothing but calls and cries [i.e., cattle or sheep] - deaf, dumb and blind, so they do not understand.

وَإِذَا نَادَيْتُمْ إِلَى ٱلصَّلَوٰةِ ٱتَّخَذُوهَا هُزُوًا وَلَعِبًا ذَٰلِكَ بِأَنَّهُمْ قَوْمٌ لَّا يَعْقِلُونَ ۝٥٨

And when you call to prayer, they take it in ridicule and amusement. That is because they are a people who do not use reason.

مَا جَعَلَ ٱللَّهُ مِنۢ بَحِيرَةٍ وَلَا سَآئِبَةٍ وَلَا وَصِيلَةٍ وَلَا حَامٍ وَلَٰكِنَّ ٱلَّذِينَ كَفَرُوا۟ يَفْتَرُونَ عَلَى ٱللَّهِ ٱلْكَذِبَ وَأَكْثَرُهُمْ لَا يَعْقِلُونَ ۝١٠٣

Allāh has not appointed [such innovations as] baḥīrah or sā’ibah or waṣīlah or ḥām. But those who disbelieve invent falsehood about Allāh, and most of them do not reason.

وَلَقَدْ ذَرَأْنَا لِجَهَنَّمَ كَثِيرًا مِّنَ ٱلْجِنِّ وَٱلْإِنسِ لَهُمْ قُلُوبٌ لَّا يَفْقَهُونَ بِهَا وَلَهُمْ أَعْيُنٌ لَّا يُبْصِرُونَ بِهَا وَلَهُمْ ءَاذَانٌ لَّا يَسْمَعُونَ بِهَآ أُو۟لَٰٓئِكَ كَٱلْأَنْعَٰمِ بَلْ هُمْ أَضَلُّ أُو۟لَٰٓئِكَ هُمُ ٱلْغَٰفِلُونَ ۝١٧٩

And We have certainly created for Hell many of the jinn and mankind. They have hearts with which they do not understand, they have eyes with which they do not see, and they have ears with which they do not hear. Those are like livestock; rather, they are more astray. It is they who are the heedless.

رَضُوا۟ بِأَن يَكُونُوا۟ مَعَ ٱلْخَوَالِفِ وَطُبِعَ عَلَىٰ قُلُوبِهِمْ فَهُمْ لَا يَفْقَهُونَ ۝٨٧

They were satisfied to be with those who stay behind, and their hearts were sealed over, so they do not understand.

وَمِنْهُم مَّن يَسْتَمِعُونَ إِلَيْكَ أَفَأَنتَ تُسْمِعُ ٱلصُّمَّ وَلَوْ كَانُوا۟ لَا يَعْقِلُونَ ۝٤٢

And among them are those who listen to you. But can you cause the deaf to hear [i.e., benefit from this hearing], although they will not use reason?

وَجَعَلْنَا عَلَىٰ قُلُوبِهِمْ أَكِنَّةً أَن يَفْقَهُوهُ وَفِىٓ ءَاذَانِهِمْ وَقْرًا وَإِذَا ذَكَرْتَ رَبَّكَ فِى ٱلْقُرْءَانِ وَحْدَهُۥ وَلَّوْا۟ عَلَىٰٓ أَدْبَٰرِهِمْ نُفُورًا ۝٤٦

And We have placed over their hearts coverings, lest they understand it, and in their ears deafness. And when you mention your Lord alone in the Qur’ān, they turn back in aversion.

وَمَنْ أَظْلَمُ مِمَّن ذُكِّرَ بِـَٔايَٰتِ رَبِّهِۦ فَأَعْرَضَ عَنْهَا وَنَسِىَ مَا قَدَّمَتْ يَدَاهُ إِنَّا جَعَلْنَا عَلَىٰ قُلُوبِهِمْ أَكِنَّةً أَن يَفْقَهُوهُ وَفِىٓ ءَاذَانِهِمْ وَقْرًا وَإِن تَدْعُهُمْ إِلَى ٱلْهُدَىٰ فَلَن يَهْتَدُوٓا۟ إِذًا أَبَدًا ۝٥٧

And who is more unjust than one who is reminded of the verses of his Lord but turns away from them and forgets what his hands have put forth? Indeed, We have placed over their hearts coverings, lest they understand it, and in their ears deafness. And if you invite them to guidance - they will never be guided, then - ever.

أَفَلَمْ يَسِيرُوا۟ فِى ٱلْأَرْضِ فَتَكُونَ لَهُمْ قُلُوبٌ يَعْقِلُونَ بِهَآ أَوْ ءَاذَانٌ يَسْمَعُونَ بِهَا فَإِنَّهَا لَا تَعْمَى ٱلْأَبْصَٰرُ وَلَٰكِن تَعْمَى ٱلْقُلُوبُ ٱلَّتِى فِى ٱلصُّدُورِ ۝٤٦

So have they not traveled through the earth and have hearts by which to reason and ears by which to hear? For indeed, it is not eyes that are blinded, but blinded are the hearts which are within the breasts.

أَرَءَيْتَ مَنِ ٱتَّخَذَ إِلَٰهَهُۥ هَوَىٰهُ أَفَأَنتَ تَكُونُ عَلَيْهِ وَكِيلًا ۝٤٣

Have you seen the one who takes as his god his own desire? Then would you be responsible for him?

وَلَئِن سَأَلْتَهُم مَّن نَّزَّلَ مِنَ ٱلسَّمَآءِ مَآءً فَأَحْيَا بِهِ ٱلْأَرْضَ مِنۢ بَعْدِ مَوْتِهَا لَيَقُولُنَّ ٱللَّهُ قُلِ ٱلْحَمْدُ لِلَّهِ بَلْ أَكْثَرُهُمْ لَا يَعْقِلُونَ ۝٦٣

And if you asked them, "Who sends down rain from the sky and gives life thereby to the earth after its lifelessness?" they would surely say, "Allāh." Say, "Praise to Allāh"; but most of them do not reason.