Can he dispense the wisdom of the ages? (4)
I believe the answer is:
sage
'can he dispense the wisdom' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'of the ages?' is the wordplay.
'of' is an anagram indicator (the answer comes from or 'of' the letters).
'ages' is an anagram of 'SAGE'.
Can you help me to learn more?
(Other definitions for sage that I've seen before include "Wise man - flavoursome plant" , "Herb for the wise one" , "Learned" , "Herb used in cooking" , "___ and onion" .)