James Frederick Ferrier,
Blackwood's Magazine
(1842)
“ Let us beware, then, of maintaining that man, in his intercourse with the external universe, has only his own perceptions or impressions to deal with. It was this unwary averment which gave rise to the systems, on the one hand, of subjective idealism, with all its hampering absurdities; and, on the other hand, of hypothetical realism, with all its unwarrantable and unsatisfying conclusions. ”
