Adequate grounds for becoming a philosopher (4,6)

I believe the answer is:

good reason

I'm a little stuck... Click here to teach me more about this clue!

'adequate' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'grounds for becoming a philosopher' is the wordplay.
'grounds' becomes 'reason' (I've seen this before).
'for' means one lot of letters go next to another (I've seen this in other clues).
'becoming a philosopher' becomes 'good' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'reason' after 'good' is 'GOOD REASON'.

Can you help me to learn more?

I've seen this clue in the Evening Standard.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.