So most of us...
So most of us, possibly know a group of them, and in the words of our dear leader of the Islamic revolution, Imam Khomeini (r.a.) which he had uttered in one of his final addresses to the students: Honourable sire! Learn lessons, before your age advance and you turbans expand, because, then it is likely, you may not be ready to attend study circles and benefit from them, even though, sometimes, man knows that lesson is beneficial for him.
The master of the monotheists (a.s.) says: Egotism prevents progress of knowledge. He also says: Self-centeredness corrupts ones intelligence. B - It is but natural that egotism makes a person unpleasant among the people who become displeased with him and do not care for him. So the Imam (a.s.) pointing to this, says: One who is pleased with himself makes many people angry with him. Yes, it must be said that egotism, in every meaning, is a harmful ignorance.
Imam Sadiq (a.s.) says: No ignorance and foolishness is more harmful than egotism. C - Egotism takes man away from reality. Consequently he is not able to benefit from good deeds. For example, once Isa (a.s.) = Isa (a.s.) was travelling with one of his companions. When they reached seashore, Isa (a.s.), with full faith in the Lord of the worlds, uttered the Name of Allah and began to walk on water. The youth accompanying him also took the Name of God with full Faith and walked on water likewise.
But, during the walk in the sea, egotism took over the latter youth. So he said to himself proudly: Now how is Isa (a.s.) superior to me? At the very moment he entertained this thought he went down in the water. Hazrat Isa (a.s.) saved him and said: This happened due to egotism in you. If you repent you will return to your earlier condition. The youth repented and gained his earlier status.
D - An egotist mostly has failed and will fail because the Holy Quran, says in regard to the unbelievers: Whatever is in the heavens and whatever is in the earth declares the Glory of Allah, and He is the Mighty, the wise.
He is who caused those who disbelieved of the followers of the Book to go forth from their homes at the first banishment; you did not think that they would go forth, while they were certain that their fortresses would defend them against Allah; but Allah came to them whence they did not expect, and cast terror into their hearts; they demolished their houses with their own hands and the hands of the believers; therefore take a lesson, O you who have eyes!