Drug addiction was a condition that marked recent times. It was the symptom of a disappointment at the unfulfilled promises of a world swayed by progress, according to the reading by the zeitgeist, that in spite of being concerned to explain the extent of a rampant social manifestation, it failed. The reading proposed by Francisco-Hugo Freda is totally different. The reflection carried out by the autor is a pioneer work as a determinant contribution to renew the drug addiction clinic. Bernard Lecœur (prologue excerpt)