The substance of Sufism is the Truth and the meaning of Sufism is the selfless experiencing and actualization of the Truth. The practice of Sufism is the intention to go towards the Truth, by means of love and devotion. This is called the tarigat, the spiritual path or way towards God. The sufi is one who is a lover of Truth, who by means of love and devotion moves towards the Truth, towards the perfection which all are truly seeking. As necessitated by love's jealousy, the sufi is taken away from all except the Truth.
Written expressions of Sufism include hagiographies, poetry, and literature describing the stations (maqamat) of spiritual ascent on the path to God and their accompanying psychological transformations. Sufis use terms such as sukr (intoxication) and sahu (sobriety) to describe their experiences. “Intoxicated” expressions of Sufism predominate in Sufi poetry, expressing joy and ecstacy. “Sober” Sufism offers methodical, specialized discussions of ritual, behavior, morality, Quranic exegesis, and the nature of God and the world. Intoxicated Sufism is popular among Muslims of all classes and persuasions. Sober Sufism tends to appeal to intellectuals.