Man is condemned to be free; because once thrown into the world, he is responsible for everything he does.
- Jean-Paul Sartre, Being and Nothingness
Freedom. Authenticity. Responsibility. Choice. These concepts form the basis of existentialist philosophy, one that challenges and provokes because it denies people their excuses for the (perhaps disappointing) quality of their lives. While acknowledging the limits, constraints and contingencies that affect the number and type of choices available to a person, existentialist ethics nonetheless declares this axiom: you may not have chosen what type of vehicle to travel in, or its condition, but you are the driver. The journey and the destination are your unavoidable responsibility.