The text intends to examine the question about the relationship between history of philosophy, philosophy and formation as a liberation of conscience. The starting point is an obvious idea, thought not always remembered: history of philosophy founds its legitimation on philosophy as historical cultural fact. The idea of formation is implicated in every system, which, before being a specific conception of reality, is a synthesis of real conditions that have influenced all aspects of human life, includingly reflexive work. Some of Bergson's and Sartre's ideas about process, form and praxis can help us to elucidate the engagement in the present included in the relationship between philosophy and history of philosophy.
History; formation process; historical time; reflexion; negation