Following Epictetus, Du Vair argues that one should not concern oneself with external possessions. In particular, he suggests that the desire for great wealth is often the cause of great unhappiness. If one can free oneself from the passions of hope, despair, fear, and anger, then it will become possible to confront the trials and misfortunes of life without any great concern. Of particular interest, however, is the way in which Du Vair synthesises the Stoic doctrine of apatheia with his Christian belief. For Du Vair, complete mastery of one's passions, achieved via the application of Stoic principles, does not contradict Christian teaching but rather can form the basis for a truly Christian way of life. Only one who has overcome the passions of fear and anger can, for instance, practice true Christian forgiveness towards one’s enemies.
Uncertainty and expectation are the joys of life. Security is an insipid thing.
Montaigne continued to extend, revise, and oversee the publication of Essais . In 1588 he wrote its third book and also met the writer Marie de Gournay , who admired his work and later edited and published it. Montaigne called her his adopted daughter.  King Henry III was assassinated in 1589, and Montaigne then helped to keep Bordeaux loyal to Henry of Navarre , who would go on to become King Henry IV.