Further, when the mind attains the objects of its desire, however hurtful or empty they may be, error prevents it from perceiving their true nature, or its perceptions are overborne by a diseased appetite, and so it is puffed up with a foolish joy. From these fountains of evil, which spring out of defect rather than superfluity, flows every form of misery that besets a rational nature.
St. Augustine, Enchiridion, §24











