Only man can stop being fully man. He can ascend above all degres of universal existence and by the same token fall below the level of the basest of creatures.
Seyyed Hossein Nasr300 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 NasrThe life of Islamic philosophy did not terminate with Ibn Rushd nearly eight hundred years ago, as thought by Western scholarship for several centuries. Rather, its activities continued strongly during the later centuries, particularly in Persia and other eastern lands of Islam, and it was revived in Egypt during the last century.
Seyyed Hossein NasrYearning is inseparable from love, and since once doesn't have the object of love immediately, one has not fallen in the embrace of the beloved immediately, they are suffering. That's how they are related.
Seyyed Hossein Nasr