Existentialism could be defined as a philosophical theory centered on the fact that the individual is a free and responsible person who determines his own development through acts of will. Existentialism is a thesis that has been discussed by some of the greatest philosophical minds to ever live. Minds like Kierkegaard and Nietzsche all had their own vision of what existentialism was and a great impact on the development of this thesis. Each of these philosophies had a tremendous influence on a great mind that would come later in history. This was the mind of Jean-Paul Sartre. Sartre, considered one of the great philosophical minds, based many of his ideas on the idea of ​​existentialism and phenomenology. In this article we will take an in-depth look at the life and mind of Jean-Paul Sartre. On June 21, 1905, Anne-Marie Schweitzer and Jean-Baptiste Sartre gave birth to their only child, Jean Paul Sartre. Anne-Marie was forced to raise Jean-Paul alone after the death of Sartre's father, John-Baptiste. Jean Paul Sartre became interested in philosophy after reading Henri Bergson's essay “Time and Free Will”. In 1929 Sartre met Simone de Beauvoir. Beauvoir, who later became a celebrated philosopher, remained Sartre's lifelong friend and would be the closest thing to a wife Sartre would ever have. In 1939 Sartre was drafted into the French army as a meteorologist. He was captured by German troops in 1940 and spent nine months as a prisoner of war. After World War II, Sartre emerged as a politically engaged activist. He was an outspoken opponent of French rule in Algeria. He also embraced Marxism; a theory based on communism, and I visited Cuba, I...... middle of paper......handwriting. "Jean Paul Sartre". 27 02 2014 .Donohoe, Dr Benedetto O'. Why Sartre is important. 09 03 2014 .Heter, Storm. Sartre's political philosophies. 09 03 2014 .Jean Paul Sartre's philosophy in being and nothingness. 07 03 2014 .Levy, Neil. Sartre. One World Publications, 2002.Media, Nobel. Jean-Paul Sartre - Biographical. 07 03 2014 .Sartre, Jean-Paul. Existentialism is a humanism. 1946.Smith, David Woodruff. Phenomenology. Ed. Edward N. Zalta. 2013. .Team, Shmoop Editorial. The files. 11 11 2008. 08 03 2014.