1. Jean-Paul Sartre

2. Spiritual History
The first is being-in-itself (en-soi), which is characterized as fixed, complete, and having absolutely no reason for its being- it just is. This is basically the same as the world of external objects. The second is being-for-itself (pour-soi), which is characterized as dependent upon the former for its existence. It has no absolute, fixed, eternal nature. Thus, human existence is characterized by "nothingness" - anything which we claim is part of human life is of our own creation, often through the process of rebelling against external constraints.

3. Existential Beliefs
His belief that actions need to be considered with reason, justification and an understanding that one’s decision will have an impact on the rest of society are crucial in this theory. When dealing with the self, Sartre believes that a man exists and it is through all of his actions that he is able to define who he is and before actions are executed, the man is nothing more than a thought.

4. Biographical Information
Born June 21st, 1905 at Paris, France
Attended Lycee Louis-le-Grand until 1930
Had further study in Egypt, Italy, Greece, and in Germany under Edmund Husserl and Martin Heidegger.
Communistic, but not party member.

5. Ethical Beliefs Believed that if you’re upset, it’s your fault
That if you let someone or something (like religion) influence your life too much that you become unauthentic

6. Other Influences Descartes, from his self thinking
Kant, from him believing that fundamental concepts structure human experience, and that reason is the source of morality.
Marx, used Marxism as a structural analysis for existentialism
Husserl, master/slave dialect