Not only widely-quoted but parodied as, for example, in one of my favourite Monty Python sketches:
'Immanuel Kant was a real piss-ant who was very rarely stable.
Heidegger, Heidegger was a boozy beggar who could think you under the table.
David Hume could out-consume Wilhelm Freidrich Hegel.
And Wittgenstein was a beery swine who was just as sloshed as Schlegel.
There's nothing Nietzsche couldn't teach about the raising of the wrist.
Socrates himself was permanently pissed.
John Stewart Mill, of his own free will, after half a pint of shandy was particularly ill.
Plato, they say, could stick it away, half a crate of whisky every day!
Aristotle, Aristotle was a bugger for the bottle,
And Hobbes was fond of his dram.
And Rene Descartes was a drunken fart:
"I drink, therefore I am."
Yes, Socrates himself is particularly missed;
A lovely little thinker, but a bugger when he's pissed'.