300 years after the rise of Islam there were Zoroastrians in Iran. The Muslim armies never forced people to accept Islam. It was only within Arabia that God ordered the idolaters to have a choice of either embracing Islam or fight against Muslims, because He wanted to remove this terrible idolatry that exited there. But outside Arabia where Islam met Christians, Jews, Zoroastrians and Hindus, they were given a choice by and large. That's why many Christians and Jewish communities survived in the Muslim world, but gradually many of them embraced Islam for different reasons.
Seyyed Hossein NasrIn Islam, we believe that it is God himself who is the ultimate guide - Al Hadi - one of the names of God is Al Hadi, the Guide. But at the same time, God has provided within the Islamic revelation the possibility of spiritual guidance through human beings, because then everyone can have direct access to God.
Seyyed Hossein NasrIn the same way that we have a body and a soul and a spirit, our soul can't walk in the street without our body - we would be dead then. Religion is the same way; it has to have a body, it has to have a form, it has to have structure. Without that, the soul cannot be prepared to follow the tariqah.
Seyyed Hossein NasrIf you have a billion Muslims, 900 million of them were not brought into Islam by any kind of invasion, but most of them through the Sufis, because human beings are such that they are affected by people of spiritual character. Certainly when they display nobility and hospitality and gentility and love and are not selfish or aggressive, and they are honest.
Seyyed Hossein Nasr