Bacon, perhaps poor, prepared with his help (11)
I believe the answer is:
philosopher
'bacon perhaps' is the definition.
(I know that Francis Bacon is a philosopher)
'poor prepared with his help' is the wordplay.
'prepared with' indicates an anagram.
'his'+'help'='hishelp'
'poor' anagrammed with 'hishelp' makes 'PHILOSOPHER'.
(Other definitions for philosopher that I've seen before include "Metaphysician" , "Immanuel Kant, for example" , "Profound thinker" , "Deep thinker" , "Eg, Kant or Plato" .)