Operating on the assumption that philosophy in general is a straight line leading away from complete ignorance, I'd have to say Descartes. He completely flies in the face of the aforementioned. So completely entrenched in language and our feeble attempts at quantifying the abstract, he forgets all language is simply a series of grunted labels strung together, no more absolute than the abstract concepts it attempts to identify.
The fact anyone knows his name, despite the fact he was an utter nincompoop, just baffles and amazes me.