Jerome Lejeune was one of the most highly regarded geneticists of modern times. He discovered numerous sicknesses of genetic origin, of which Down Syndrome (Trisomy 21) is the best known, and he was an ardent defender of the handicapped and of the unborn

His daughter Clara presents here the private man: the happy father of a family, surrounded by children and grandchildren, a great Christian marked by a radiant faith, a man of culture inspired with a great sense of humor, but above all a man of courage and of great relevance who would become involved in causes that would transform his life into a destiny.