He opens, in the Preface, stating his hope and desire that the work would contribute to the common good, and that through it the physicians would become "instruments and dispensers of God's power and mercy in prolonging and renewing the life of man" [REF].
Throughout the work, Bacon inquires for the causes of the degeneration of the body and old age, taking into consideration different analysis, theories and experiments, to find possible remedies to them that could prolong life and retard the process of degeneration of the body.