Bergson's idea of all-native development (4,5)

I believe the answer is:

elan vital

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'bergson's idea' is the definition.
I can't judge whether this defines the answer.

'all-native development' is the wordplay.
'development' indicates anagramming the letters.
'all'+'native'='allnative'
'allnative' anagrammed gives 'ELAN VITAL'.

'of' is the link.

Can you help me to learn more?

(Another definition for elan vital that I've seen is " Force for growth".)

I've seen this clue in the Sydney Morning Herald.

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