The Holy Quran is a compendium of wisdom and insight. It is not an indiscriminate collection of ideas. It expounds every matter itself and contains provision for requirements of every kind. It is a sign in every respect. If someone denies this, I am prepared to demonstrate its miraculous nature in every respect. In the present age, many vigorous onslaughts are being waged against the Unity of Allah and His existence. The Christians have also exerted their best efforts and written extensively, but everything they have stated and written is with relation to the God of Islam and not about the dead god who was crucified and is but helpless. I can confidently claim that anyone who endeavours to write in defence of the Being and existence of Allah Almighty will ultimately have no choice but to accept the God presented by Islam. For every page of the Book of Nature testifies to His Being and man naturally bears the impress of the very same God in his person. Hence, when such people take a step, they invariably advance towards the field of Islam. This too is a magnificent miracle.
(Hazrat Mirza Ghulam Ahmadas, Malfuzat, Vol. 1, p. 80)