Original: Jean-Paul Charles Aymard Sartre (21 June 1905 15 April 1980), commonly known as Jean-Paul Sartre,, was a French existentialist philosopher, playwright, novelist, screenwriter, political activist, biographer, and literary critic.
Simplified: Jean-Paul Charles Aymard Sartre (June 21, 1905 - April 15, 1980) was a French existentialist (way of thinking about human freedom) philosopher (person who thinks about ideas and ways of thinking).