The first family secret quoted by the people questioned by questionnaire is that of filiation. The people born in the secret (or born under X*) are recipients of a secret imposed by legislation, that of their biological origins. If in addition, this adoption was hidden from them by their family, as is the case of the people met in the context of this research, the consequence is a all the more violent in terms of suffering as the revelation will have been late. Family loyalty forces members to repeat family events and forces them to pay for the faults of their ancestors. The family lives lockecl up in family myth which prescribes the laws and rules to be respected. And so, after the revelation, the person recipient of the secret will refuse these laws and rules ; he or she will be marginalized by his or her family and dialogue, or even all relations with his or her family, will be broken. Thus, he or she was released from the laws and rules prescribed by family myth and from any form of loyalty with respect to his or her family. This exclusion will enable him or her to become sociable. Indeed, in our society, this transparency is triumphed and "extimity" is applauded. Secrets are not opposed to this but are complimentary and the valid ation of the secret is a support for the socialization of the person