Google those :
Avicenna
al-Khwārizmī
Ahmed Zewail
Farouk El-Baz
Magdi Yacoub
Essam Mohamed Haji
---------- Post added at 11:14 AM ---------- Previous post was at 09:16 AM ----------
Here you go :
"When you start usurious trade, when you grab a hold of cows' tails and limit yourselves to farming and abandon Jihad, Allah will sent upon you humiliation, from which you will not be delivered until you return to your Faith." (Authentic Hadith told by Ahmad).
"We were of the most disgraced of people, and Allah granted us honor with this Islam. Now, whenever we seek honor in other than that which Allah honored us with, Allah shall disgrace us" (Authentic Hadith - Al-Mustadrak alaa al-Sahihain)
"And never think that Allah is unaware of what the wrongdoers do. He only delays them for a Day when eyes will stare [in horror]." (14:42)
"Or do you think that you will enter Paradise while such [trial] has not yet come to you as came to those who passed on before you? They were touched by poverty and hardship and were shaken until [even their] messenger and those who believed with him said,"When is the help of Allah ?" Unquestionably, the help of Allah is near." (2:214)
AND THE MOST CLEAR REASON :
"The Messenger of God said: The nations are about to flock against you [the Muslims] from every horizon, just as hungry people flock to a kettle. We said: O Messenger of God, will we be few on that day? He said: No, you will be many in number, but you will be scum, like the scum of a flash-flood, without any weight, since fear will be removed from the hearts of your enemies, and weakness (wahn) will be placed in your hearts. We said: O Messenger of God, what does the word wahn mean? He said: Love of this world, and fear of death." (Abu Dawud Book 032 Hadith #4284.)