John Chrysostom

None of the grievous things which are in this present life can fix their fangs upon that lofty soul, which is truly philosophic, neither enmity, nor accusations, nor slanders, nor dangers, nor plots. It flies for refuge as it were to a mighty fortress, securely defended there against all that attack it from this lower earth. Such was the soul of Paul; it had taken possession of a place higher than any fortress, the seat of spiritual wisdom, that is, true philosophy. For that of those without, i.e. the heathen, is mere words, and childish toys. But it is not of these we now speak, but at present concerning the things of Paul. That blessed one had both the Emperor for his enemy, and in addition, many other foes many ways afflicting him, even with bitter slander. And what says he? Not only do I not grieve nor sink beneath these things, but "I even rejoice, yea, and will rejoice," not for a season, but always will I rejoice for these things. "For I know that this shall turn out to my salvation," that which is to come, when even their enmity and jealousy towards me further the Gospel.