Simplify the following text for a Grade 9 native English-speaking person.
Original: Milan Kundera , born 1 April 1929 , is a writer of Czech origin who has lived in exile in France since 1975 , where he became a naturalized citizen in 1981 .
Simplified: Milan Kundera ( April 1 1929 ) is a writer who was born in Czechoslovakia and writes mainly in the Czech and French languages .