In the age of posthumanism and the rule of genetic technology, when more and more, even in contemporary social and cultural sciences, under the term of biologically understood life, we talk about the new determinism of the genetic code, Sartre's philosophy of existence and engagement, despite the obvious aporias, shows the way to opening the question about the necessary possibility primordial freedoms at all. This is the freedom that transcends any human destiny. From her uncertainty of success is born the possibility of a new beginning.