And in fact...

And in fact, this method provides him with rational proof of the remaining teachings and injunctions which he has accepted without rational demonstration, for the truth of the principle of prophecy proves in a definitive manner the validity of all of the sayings which have reached us from the Prophet.

The way of rational demonstration-Islam teaches those people who are endowed with sound minds and who have the capacity to comprehend scientific theories and intellectual and logical arguments through logical and rational demonstration. In other words, it guides them towards that which their uncorrupted and reality-seeking primordial nature immediately perceives. It does not first impose upon them its doctrines and beliefs and then defends these by reasoning and proofs.

The Book and the Tradition, that is, the verses of the Holy Quran and the sayings of the Prophet and of the Shi’ite Imams-which make clear the meaning and purpose of the Quranic verses-are full of this type of rational demonstration.

In them, the Islamic beliefs and doctrines are explained in detail by means of the simplest forms of expression and the most convincing proofs, and likewise, mention is made in them of the general and universal benefits and advantages of the Islamic laws and injunctions.

Obviously, we must not overlook the fact that the meaning of discussion and demonstration of the benefits and advantages of Islamic laws and injunctions is not that if an individual Muslim or Islamic society, in general, does not understand a particular injunction, that injunction should be rejected.

For as we have already mentioned, these laws were promulgated by means of prophecy, and the proof of the validity of prophecy is a summary proof of the validity of these laws, even if we do not possess the detailed reason for this. The way of purification of the soul-The third group of men is those who are ready and eager to sever all material attachments and to turn their attention away from the deceiving adornments and illusory desires of this world.

Such men are prepared to forget all that is other than God and to close their eyes to every beauty and ugliness and every sweet and bitter experience of this transient and illusory existence. Opening the eye of discernment.