Simplify the following text for a Grade 9 native English-speaking person.
Original: Gustav Klimt ( July 14 , 1862 â `` February 6 , 1918 ) was an Austrian Symbolist painter and one of the most prominent members of the Vienna Secession movement .
Simplified: Gustav Klimt ( July 14 , 1862 â `` February 6 , 1918 ) was an Austrian Symbolist painter . He was one of the most prominent members of the Vienna Secession movement .