Urge seizing philosopher, left asking for nothing (10)

I believe the answer is:

prayerless

'asking for nothing' is the definition.

'urge seizing philosopher left' is the wordplay.
'urge' becomes 'press' ('press' can be a synonym of 'urge'**).
'seizing' is an insertion indicator.
'philosopher' becomes 'ayer' (AJ Ayer).
'left' becomes 'l' (common abbreviation).
'ayer'+'l'='ayerl'
'press' placed around 'ayerl' is 'PRAYERLESS'.

I've seen this clue in The Guardian.

Want a hint initially instead of a full solution? Install my app