There is an intellectual function in us which demands unity, connection and intelligibility from any material, whether of perception or thought, that comes within its grasp; and if, as a result of special circumstances, it is unable to establish a true connection, it does not hesitate to fabricate a false one.
The Standard Edition of the Complete Psychological Works of Sigmund Freud: (1913-1914) Totem and taboo and other works. [1955 (ed. 1953)