'Of all horrible religions the most horrible is the worship of the god within. Anyone who knows anybody knows how it would work;...that Jones shall worship the god within turns out ultimately to mean that Jones shall worship Jones. Let Jones worship the sun or moon, anything rather than the Inner-Light; let Jones worship cats or crocodiles, if he can find any in his street, but not the god within.'
GK Chesterton in C FitzSimmons Allison, The Cruelty of Heresy, p.167.