On 15th December, 2018 last in Geneva -Switzerland- Alexandre Stevens, Vice President of the NLS, gave a lecture entitled "Develop the Case and Read the Sínthome. "This conference is framed as the first of a cycle of three seminars that deal with the construction of cases, organized by Sofia Guaraguara, Lidia Sinka, Nteli Aikaterini and Thomas Rathelot, and with the support of ASREEP-NLS.