In 1901, Antoine posted an advertisement in the Spiritist journal "The Messenger" ("Le Messager") seeking doctors who would associate with him, but the attempt did not meet with success. At the same time, he was deeply influenced by Léon Denis' book "In the Invisible". He began to give up his remedies, particularly because of his then recent trial, and gradually left Spiritism, as he was sometimes deceived by false mediums. In 1902, his group The Vine Growers of the Lord, although solicited, did not participate in the creation of a Spiritist Federation, then in 1905, the members did not attend the preparatory meeting of the Congress in Liège and refused the 0.25 franc contribution. In 1905, he saw up to 400 patients per day. Around the same time, he published a four-page leaflet which commented on passages of the Gospels without reference to Spiritism.