Perhaps Genet isn't led by intelligence as a philosopher (12)
I believe the answer is:
wittgenstein
'a philosopher' is the definition.
(I know this)
'perhaps genet isn't led by intelligence' is the wordplay.
'perhaps' is an anagram indicator.
'led by' says to put letters next to each other.
'intelligence' becomes 'wit' (wit is a kind of intelligence).
'genet'+'isnt'='genetisnt'
'genetisnt' is an anagram of 'tgenstein'.
'tgenstein' put after 'wit' is 'WITTGENSTEIN'.
'as' is the link.
(Other definitions for wittgenstein that I've seen before include "Ludwig --, Austrian-born philosopher" , "British philosopher" .)