Faces six with great wisdom (7)

I believe the answer is:

visages

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'faces' is the definition.
(I know this)

'six with great wisdom' is the wordplay.
'six' becomes 'VI' (Roman numerals).
'with great wisdom' becomes 'sages' (I can't justify this - if you can you should believe this answer much more).
'vi'+'sages'='VISAGES'

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(Other definitions for visages that I've seen before include "Human faces" , "Appearances" .)

I've seen this clue in The Irish Independent.

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