This is from QXP:
25:30 The Messenger will say, “O My Lord! These are my people who had abandoned this Qur’an as something to be neglected."
This ill treatment of the Divine Message and the subsequent filling of the void with conjecture is THE cause of the Muslim downfall on a Global scale.
Any nation that holds on to this Divine Writ in letter and spirit can build paradise on earth. The early Islamic history is a great testimonial to this claim, but we will explore this point a little further.
But an obvious and important question arises here: how others were able and continue to make progress? In the last several centuries, the west and many other non-Muslim countries have been making spellbinding advances in education, science and technology and in their governmental systems without the Qur’an! The short answer is that they have been making great use of their faculties of reason and intellectual inquiry.
However, a very significant factor has been quietly playing its role in this regard. The Qur’an has been, perceptibly and imperceptibly, making a very positive universal impact on human civilization during the last fourteen centuries. The celebrated French surgeon, thinker and historian, Robert Briffault (1876-1978) has very convincingly elaborated this fact in his remarkable work, "The Making of Humanity."
But Muslims, after disabling the Divine Revelation, have also allowed their intellect to become paralyzed by blindly following the ancient trends. They have fallen easy prey to numerous utterly senseless dogmas fabricated centuries after the exalted Prophet and his noble companions.