Simplify the following text for a Grade 7 native English-speaking person.
Original: Martin Gardner ( October 21 , 1914-May 22 , 2010 ) was an American mathematics and science writer specializing in recreational mathematics , but with interests encompassing micromagic , stage magic , literature ( especially the writings of Lewis Carroll ) , philosophy , scientific skepticism , and religion .
Simplified: Martin Gardner ( October 21 , 1914-May 22 , 2010 ) was an American writer .