Indeed, in the creation of the heavens and earth, and the alternation of the night and the day, and the [great] ships which sail through the sea with that which benefits people, and what Allah has sent down from the heavens of rain, giving life thereby to the earth after its lifelessness and dispersing therein every [kind of] moving creature, and [His] directing of the winds and the clouds controlled between the heaven and the earth are signs for a people who use reason (2:164)
The Quran was revealed to Muhammad who was unlettered; he could neither read nor write. His people were generally unlettered as well. Therefore, how can a man bring forth a Scripture which stunned the most eloquent of people?
Allah says: Say, If mankind and the jinn were to be gathered in order to produce the like of this Qur’an, they could not produce the like of it, even if they were to each other assistants. (17:88)
The Prophet and many of his companions were destitute, and he would recite to them verses from the Quran which have mention of scientific facts. Over 1400 years after the Quran was revealed, modern science is still discovering these very facts with advanced equipment and technology!
Thomas Carlyle said: A false man found a religion? Why, a false man cannot build a brick house! If he does not know and follow truly the properties of mortar, burnt clay and what else he works in, it is no house that he makes, but a rubbishheap. It will not stand for twelve centuries, to lodge a hundred and eighty million; it will fall straightway. (1)