The article covers diverse approaches of the term secret: individual, group, social, transgenerational and psychoanalytical, with reference to various psychoanalysts having reflecting about this topic. The author pays special attention to importance of secrets in the psychoanalytic relationship. Conscious and unconscious secrets are brought into play in transfer-countertransfer, stressing on the importance of tolerating the secrets without forcing its disclosure. The analyst's capacity to tolerate the unspoken and wait for the timely moments of intervention can allow the development of the internal space in the analytical process.