The dead abstract notions of the intellect, the dialectical disputes of the reason, the purely subjective and one-sided apprehension of objects by a deluded fancy, and the absolute will, are the four sources of human error. Considered apart from the aberrations of passion, special faults of character, and prejudices of education, as well as the false notions and wrong judgments to which the latter give rise these four are the springs from which flows all the error of the soul which makes itself the centre of the terrestrial reality, and which, springing out of this soil, is nourished and propagated by it. To what then are we to look to dispel these manifold delusions but to a closer and more intimate union of the soul with God as the source of life and truth?
[Friedrich Schlegel, The Philosophy of Life, Morrison, tr. Bohn, (London: 1847) p. 105.]