In mystical Kabbala thought of the 13th through 18th centuries, tikkun olam indicates the repair and realignment of the disjunction between the divine and material worlds. Good actions (mitzvot) and other required activities in Judaism were thought to help the divine light trapped in the material world reconnect with the divine effulgence. In some Kabbala works and the pietistic Hasidic movement of the 18th century, emphasis was put on individual moral uprightness and the special roles of Jews and tzaddiks (righteous men) in helping to repair the world.