The current political and ecological risks explain the climate of anxiety in which we live. By highlighting the destructive dynamics of despair, Corine Pelluchon reveals this paradox: facing the possibility of our civilization collapsing is the opportunity for change that opens up a horizon of hope. This requires understanding that hope has nothing to do with optimism, which hides the seriousness of the situation, and is also distinguished from expectation, which expresses the desire to see personal wishes fulfilled. Unlike denial, hope implies putting the negative to the test. It is the journey of the impossible. Born without our having sought it, and when we have lost all pride and illusion, it is the ability to decipher in reality the signs of possible progress and to transmit the energy necessary to achieve it.