Crossword Genius

Sectarian rambling of a philosopher (9)

Ross

I believe the answer is:

cartesian

'philosopher' is the definition.
(thesaurus)

'sectarian rambling' is the wordplay.
'rambling' indicates an anagram.
'sectarian' anagrammed gives 'CARTESIAN'.

'of a' acts as a link.

(Other definitions for cartesian that I've seen before include "Relating to a particular French philosopher" , "Of Descartes or his theories - maybe sectarian" , "Following a particular philosopher" , "Pertaining to a particular French philosopher" , "Philosopher's follower" .)

I've seen this clue in The Times and The Sunday Times.
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