"...seeing they see not; hearing they hear not, neither do they understand." (Matthew 13:13)

Al-Quŕán, the Holy Book of God, also condemns this mulish mentality:

These pages are now addressed to those sincerely humble souls, who are genuinely interested in seeking the Light of God, and who wish to be guided by it. As for the other, with a sickness in their souls, the facts presented herein can only increase the disease of their hearts.