Cynic philosopher (8)
I believe the answer is:
diogenes
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">cynic philosopher</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for diogenes that I've seen before include "Philosophical fellow" , "Athenian philosopher who lived in a tub" , "Greek cynic philosopher who lived in tub" .)