From it genesis twelve hundred years ago to today, Islamic philosophy (al-hikmah; al-falsafah) has been one of the major intellectual traditions within the Islamic world, and it has influenced and been influenced by many other intellectual perspectives, including Scholastic theology (kalam) and doctrinal Sufism (al-ma'rifah or al-tasawwuf al-'ilmi) and theoretical gnosis ('irfan-i nazari).

Spiritual guidance needs guidance. It's like comparing walking on the ground and mountain climbing. Once you learn how to walk, you can walk on the ground by yourself, but if you want to climb Mount Everest, you need a guide.

Many people have criticized Islam for being just automatic, having no individuality, just surrendering your will to God, but we Muslims know very well that every moment of the day we have to practice the fact that to surrender one's self to God is an act of free will.

What does a lamp do? The lamp is like a horse that is running but stays put. But by virtue of being a lamp it illuminates the space around it. Therefore, the practice of purifying one's soul, of living virtuously, has tremendous impacts upon the ethics of the surrounding society.

If you want to make a decision in life on what to do, but if you're trying systematically, through spiritual practice, through meditation, through the invocation of the name of God, to walk closer and closer in this life to Him, you need someone to guide you. And God has made it possible in Islam for this guidance to exist.

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.

Sufism has always had the function of purifying Islamic ethics and that fasting and tazkiya is like lighting a lamp.