[Scientific rigor and attention to values. Memory of Alessandro Liberati.]

The author describes the personality of Alessandro Liberati - an Italian doctor and researcher - ten years after his death: a competent, kind person with a good sense of humor. The take-home message is that it is worth engaging in the institutions in which we work throughout our lives and that the improvement of individual health conditions and public health go through daily work capable of combining values and the best scientific evidence available.