The human soul, provided it is pure and strong enough, can contact the unseen in waking life as well as in dreams: all that is required is withdrawal of the soul from the tumult of sensory life.
Seyyed Hossein NasrThe Quran explicitly opposes the killing of innocent people and the Prophet was always careful in doing that. If they had to fight a war, he was always on the side of peace as soon as it was possible to make peace because that's what the Quran says also.
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 Nasr