Philosopher-on-Philosopher

Arthur Schopenhauer on Georg Hegel
“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.” 

Ludwig Wittgenstein on Bertrand Russell “Russell’s books should be bound in two colors, those dealing with mathematical logic in red – and all students of philosophy should read them; those dealing with ethics and politics in blue – and no one should be allowed to read them.”