This seminal work by Papus looks at the life and teachings of the founder of the Elus Coens through examinations of the personal correspondence of the master with his disciples, whom he calls "emulators." This volume makes an excellent companion to the work of Le Forestier, containing much of the source material upon which the latter relies. Papus includes as an appendix some of the catechisms of the Elus Coens, which further elucidate Pasqually's doctrine of reintegration.