Simplify the following text for a Grade 11 native English-speaking person.
Original: El Greco is regarded as a precursor of both Expressionism and Cubism , while his personality and works were a source of inspiration for poets and writers such as Rainer Maria Rilke and Nikos Kazantzakis .
Simplified: El Greco is considered to have influenced both the Expressionism and Cubism styles . His personality and works inspired poets and writers like Rainer Maria Rilke and Nikos Kazantzakis .