Vanity

31. We read of various ancient philosophers who bore calumny, insults and contempt with perfect equanimity and without anger or perturbation, but they did not even know the name of humility. Their courageous fortitude was only an effect of refined pride, for as they considered themselves far above kings and emperors they cared little about insults, and maintained their equanimity by the contempt with which they looked down on those who insulted them. They overcame their feeling of resentment by a passion that was more dominating still, and that they were modest, peaceable and gentle was an effect of that pride which despotically ruled the feelings of their hearts.
There is an immense difference between the morality of human philosophy and that evangelical morality taught by Jesus Christ. Read the works of Seneca attentively-----he who was held toexceed all other philosophers in morality,-----and you will see how in those very maxims with which he teaches magnanimity and fortitude he also instills pride. Read the works of the most famous of the Stoics, and you will say with St. Jerome that "When they are studied with the greatest care and attention, there is to be found no satisfactory fullness of truth, no correspondence with the true principles of justice." [Epist. 146, ad Damas.]
All is vanity that only inspires vanity.
It is only in the Gospel of Jesus Christ that are to be found the rules of that humility of heart which is true virtue, consisting in theknowledge of God's greatness and of our own nothingness; and it is by attending to the study of this wise humility that we fulfill the Apostolic precept: "Not to be more wise than it behoveth to be wise, but to be wise unto sobriety." [Rom. xii, 3]

Jesus Christ before teaching anything of His new law wished to teach humility, as St. John Chrysostom observes: "When He began to lay down His Divine laws, He started with humility." [Hom. 39 in Matt.] For without humility it is impossible to comprehend this Heavenly doctrine, but with humility we are enabled to understand everything that is necessary or useful to our salvation.