Translate the following English sentence to French:
"The prevention of adolescent pregnancies demands, above all, that we educate the young in the values which stem from their essential sense of self-worth and teach them to enjoy their freedom in a responsible manner."
En effet, si l'on souhaite éviter la grossesse d'adolescentes, il faut surtout former les jeunes aux valeurs qui donnent à la personne une nature transcendantale et leur apprendre à vivre leur liberté de manière responsable.