In his speech: "The fire of a meeting", Philippe Hellebois addressed the tension between "the significant articulation and libido" leaning on the writing about Lacan Gide, stressing that "between the two there is no natural or particular relationship but a gap. However, they end as a couple". "How?" asks Philippe Hellebois. His response, peppered with quotations of Gide and Lacan, was exciting, giving rise to essential issues concerning what founds an encounter for a subject. For his part, Pierre Naveau provided at this meeting, a reflection titled: "The ambiguity of a significant against the contingency of the real". Pierre Naveau proposed "to evoke the way in which, in its sixth seminar- the desire and its interpretation-, Lacan gives to the word ' foil, found in Act V of Hamlet, an unexpected dimension". A demonstration loaded with findings, which articulated with finesse the ambiguity and surprise against what is not planned. Philippe Hellebois is psychoanalyst in Belgium, the Courtil therapeutic director and teacher of the Clinic Section of Brussels. Pierre Naveau is psychoanalyst in Paris, Professor at Paris VIII University and teacher at the Clinic Section of Paris Saint-Denis. Both are members of the Scientific Committee of the Congress of the WAP. The meeting was presented and animated by Laure Naveau, psychoanalyst in Paris, Director of Papers and member of the Action Committee of the one school.