The researcher, exegete and scholar of the holy Quran by pointing out that the Holy Quran is a light and guidance for all people, mentioned: the holy Quran is so strong light that it can show the past and the future of the universe and everything in it, and provides the mankind with a guidance by which he can have a healthy life. These are all the words of the commander of the faithful, Imam Ali (peace be upon him) in "Nahjul Balagheh" which is mentioned in one line and it is as follows: it is a strong and influential light which when your heart is tied with this light, you live in the world but you see everything you wish to about unworldly things.
source : erfan.ir