What is the main idea of existentialism?

Related questions

1. What does existential really mean?
2. What is the importance of existentialism?
3. What is the difference between nihilism and existentialism?
4. Who discovered existentialism?
5. What is an example of existentialism?
6. What is the opposite of existentialism?
7. What is Existentialism mention its fundamental principles?
8. What is Kierkegaard's leap of faith?
9. How does Sartre define existentialism?
10. What is essentialism philosophy?

Tags

1. #wanders
2. #existence
3. #existentialism
4. #defines
5. #philosophical
6. #essence
7. #states
8. #which
9. #between
10. #choice
11. #thoughts
12. #himself
13. #angst
14. #world
15. #freedom
16. #belief
17. #exists
18. #focuses
19. #precedes
20. #process
21. #existential