“No, this evening I shall not be free.” We barely notice this speech if we are with friends; we are gay all the evening, a certain image never enters our mind; during those hours it remains dipped in the necessary solution; when we return home we find the plate developed and perfectly clear. We become aware that life is no longer the life which we would have surrendered for a trifle the day before, because, even if we continue not to fear death, we no longer dare think of a parting.