The metaphysical and ethical dimensions of human freedom are intimately related. This is the most significant difference between the existentialists and Husserlian phenomenology: the existentialists link the power to disclose the world to the necessity of human beings to decide who they should be, in terms of the fundamental values directing a person’s life.
The concept of “existence” designates precisely this ethical dimension of human life. The existentialists argue that, of all the beings existing in the world, the human being is the only one that can decide what it should be; indeed, it is forced to do so since it has no fixed nature. As the existentialist motto goes, “man is condemned to be free.”