Considers sources of inspiration (5)
I believe the answer is:
muses
'sources of inspiration' is the definition.
(I've seen this in another clue)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for muses that I've seen before include "Ponders with goddesses of the arts" , "Sources of artists' inspiration" , "Thinks" , "Nine goddesses, inspirations for artists" , "Nine Greek and Roman goddesses presiding over the arts" .)