We did not assume that any one form of experience could be accepted as already, in its main lines, wholly free from error. Led by this principle, we … - R. G. Collingwood

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We did not assume that any one form of experience could be accepted as already, in its main lines, wholly free from error. Led by this principle, we found that the real world was implied, but not asserted, in art; asserted, but not thought out, in religion; thought out, but only subject to fictitious assumptions, in science; and therefore in all these we found an ostensible object — the work of art, God, the material universe — which was confessedly a figment and not the real object. The real object is the mind itself, as we now know.