Quotation

Of all conceivable forms of enlightenment the worst is what these people call the Inner Light. Of all horrible religions the most horrible is the worship of the god within. Any one who knows any body knows how it would work; any one who knows any one from the Higher Thought Centre knows how it does work. That Jones shall worship the god within him turns out ultimately to mean that Jones shall worship Jones.

- G.K. Chesterton from Orthodoxy

Like with so much else in modernity he had New Age sussed.