Lewes, G. H. (1891). The absolute as unknowable force. In G. H. Lewes, Problems of life and mind, first series: The foundations of a creed, Vol. 2, pp. 397-408). Boston, MA, US: Houghton, Mifflin and Company.
http://dx.doi.org/10.1037/14244-024
To hold that man cannot know the reality which underlies phenomena, and therefore can never know the Absolute, which he is nevertheless compelled to believe in, is to hold an opinion which scarcely admits of question when the terms in which it is expressed are clearly defined; but it is an opinion vehemently rejected by men who refuse to acknowledge that the terms so defined express any positive experiences. These objectors maintain that, according to the only rational serviceable meaning of the terms Things, Reality, and Absolute, man can and does know them, if he knows anything at all. It is obvious that the antagonist schools are not standing on common ground. (PsycINFO Database Record (c) 2016 APA, all rights reserved)