"Age of Reason" writer (5)
I believe the answer is:
paine
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">age of reason writer</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for paine that I've seen before include "Radical writer called 12" , "Thomas ....., American author of 'The Rights of Man'" , "Tom - - , revolutionary" .)