From more than 1400 years ago until now Allah the Almighty in Holy Quran is challenging all of the human beings when saying:

And if you are in doubt about what We have sent down upon Our Servant [Muhammad], then produce a surah the like thereof and call upon your witnesses other than Allah, if you should be truthful. (23) Al Baqara , The Cow


Until know the challenge is open and until now no one could do and no one will. Those useless speeches about Holy Quran can do no harm to this great book. Until now The Quran is defying every body to create only a fly!

O people, an example is presented, so listen to it. Indeed, those you invoke besides Allah will never create [as much as] a fly, even if they gathered together for that purpose. And if the fly should steal away from them a [tiny] thing, they could not recover it from him. Weak are the pursuer and pursued. (73) Al Hajj


There are far more great lessons in Quran but they turn blind eyes and skip to their desires and interpret as they like it. Why do not they come to those great verses? So many persons criticized and are criticizing Holy Quran they come and go but Holy Quran remained and until know the followers of this religion are increasing. Where are those who make false speeches about Holy Quran? About the Prophet of Islam? About Allah?
Where are those atheists and Christians and all who accuse Holy Quran to answer Allah's calling them to "pass beyond the regions of the heavens and the earth."?

O company of jinn and mankind, if you are able to pass beyond the regions of the heavens and the earth, then pass. You will not pass except by authority [from Allah]. (33) Al Rahman

We answer their allegations, refute their slanders, dispel their misconceptions and clarify the contradictions but where are they from answering the Quran and accepting the challenges? Why do not they stop make allegations and start trying to pass beyond the regions of the heavens and the earth or make a fly?

Now they have contradictions.