Simplify the following text for a Grade 5 native English-speaking person.
Original: Friedrich DÃ 1\/4 rrenmatt ( January 5th 1921 in Konolfingen ; â December 14th 1990 in Neuenburg\/Neuch Ã cents tel ) was a writer and philosopher from Switzerland .
Simplified: DÃ 1\/4 rrenmatt died from heart failure on 14 December 1990 in NeuchÃ cents tel .