First person to think highly about in a dream (7)
I believe the answer is:
reverie
'a dream' is the definition.
(reverie is a kind of dream)
'first person to think highly about' is the wordplay.
I cannot quite understand how this works, but
'first' could be 'i' (I in Roman numerals eg Elizabeth I) and 'i' is found within the answer.
'person' could be 'eve' (Eve is an example) and 'eve' is present in the answer.
'about' could be 're' (regarding) and 're' is found in the answer.
A single letter 'r' remains which might be clued in a way I don't understand.
This explanation may well be incorrect...
'in' acts as a link.
Can you help me to learn more?
(Other definitions for reverie that I've seen before include "A waking dream" , "I revere being in a state of dreaminess" , "I revere in daydream" , "Daydream or preoccupation" , "Brown study" .)