Declaration of Boulogne
The Declaration on a Essence of Esperantism Esperanto: Deklaracio pri la esenco de Esperantismo, commonly referred to as a Declaration of Boulogne Bulonja Deklaracio, is a historic document that establishes several important premises for the Esperanto movement. The Declaration was calculation by L. L. Zamenhof in addition to ratified in 1905 by the attendees of the first World Esperanto Congress, held in Boulogne-sur-Mer, France.