“Hegel, installed from above, by the powers that be, as the certified Great Philosopher, was a flat-headed, insipid, nauseating, illiterate charlatan who reached the pinnacle of audacity in scribbling together and dishing up the craziest mystifying nonsense.”
“May Hegel's philosophy of absolute nonsense - three-fourths cash and one-fourth crazy fancies - continue to pass for unfathomable wisdom without anyone suggesting as an appropriate motto for his writings Shakespeare's words: "Such stuff as madmen tongue and brain not," or, as an emblematical vignette, the cuttle-fish with its ink-bag, creating a cloud of darkness around it to prevent people from seeing what it is, with the device: mea caligine tutus. - May each day bring us, as hitherto, new systems adapted for University purposes, entirely made up of words and phrases and in a learned jargon besides, which allows people to talk whole days without saying anything; and may these delights never be disturbed by the Arabian proverb: "I hear the clappering of the mill, but I see no flour." - For all this is in accordance with the age and must have its course.”
Arthur Schopenhauer
Estas críticas foram retomadas por Wittgenstein (que tinha lido Schopenhauer enquanto adolescente) e depois por Carnap no ensaio dele
"Superação da metafísica pela análise lógica da linguagem" (The Elimination of Metaphysics Through Logical Analysis of language, 1932)
JYB