^^Exactly. What Nektarios said. Islam (the word that literally means simply "Obedience") has no unified theology, no dogmatics, no clergy as such. A Muslim is one who believes that there is no God but Allah and that Mohammed is the Prophet of Allah. A Muslim is also called to pray and fast and give alms. Otherwise, there are hundreds or thousands of the most diversified versions of what it is to be a Muslim and what is this thing called Islam. A Muslim in Chechnya, for example, believes in spirits of his ancestrors and prays to them, which is something a Vahhabi ("Puritan") Muslim will most definitely condemn as Paganism. There is Muslim mysticism (Sufism), Muslim scholasticism, Muslim juridism, and what not. Muslims never had anything even remotedly close to our Ecumenical Councils - not because they did not have the time or the opportunity, but because they consider it principally wrong to create a body of doctrines and to separate orthodoxy from heresy. So, while it is definitely lukewarm and wrong to ignore or approve militant Islamists who preach literal Jihad and justify killing "infidels," it would be, IMHO, completely wrong to extrapolate a negative attitude to the whole Islam.