Until I write to my people. Our Prophet does not authorize us to delay our enemies more than three days. So make up your mind. This companion came from a society which was materially far behind the Persian empire. Nevertheless he had in himself the seed of Truth and righteousness that allowed him not to be distracted or impressed with the glamour surrounding the Disbelievers.
Civilization starts with the correct belief and faith.
The material aspects of civilization will come later as a by-product. On the other hand, the disbeliever, no matter how materially advanced he might be, is an uncivilized person and bears in his soul the germs of his own destruction. This is why you should take pride in your religion. This is why you should take pride in Islam.