But the height of audacity in serving up pure nonsense, in stringing together senseless and extravagant mazes of words, such as had previously been known only in madhouses, was finally reached in Hegel, and became the instrument of the most barefaced general mystification that has ever taken place, with a result which will appear fabulous to posterity, and will remain as a monument to German stupidity.
Arthur Schopenhauer discussing Georg Hegel’s Phenomenology of Pure Reason. There are whole seminars devoted to just that book alone and people come out of them at the end none the wiser. I think on his deathbed Hegel wrote that there was only one man who ever even understood what Hegel wrote and even he got Hegel wrong.
Probably one of the most insanely difficult books on philosophy ever written though the modern Continental Philosophers like Derrida, Lacan, etc. some awful close!