Consider a source of inspiration (4)
I believe the answer is:
muse
I believe this is a double definition.
'consider' is the first definition.
(I know that consider is a more specific form of the action muse)
'a source of inspiration' is the second definition.
(I've seen this before)
(Other definitions for muse that I've seen before include "Inspiring goddess" , "Inspiration for poet etc - ponder" , "Cogitate" , "Ponder, say meditatively" , "Ponder or meditate" .)