"Enlightenment is the human being's emergence from their self-incurred immaturity. Immaturity is the inability to make use of one's own understanding without direction from another. This minority is self-incurred when its cause lies not in lack of understanding but in lack of resolution and courage to use it without direction from another. Sapere aude!  Dare to be wise! Have courage to make use of your own understanding! is thus the motto of Enlightenment."