Imam Ali (AS) said: A person who is (a constant) companion of the Quran is guided by it and his/her deviation from the right path, as well as the blindness of his/her heart will be diminished. Be aware that a person who has the Quran, has no need (is independent) and without the Quran will not be independent [1].
[1] Nahjul Balaghah, Sermon 176.