66 In like fashion does he exhort the maiden Eustochium to courageous and lifelong toil for Christ's sake: To become what the Martyrs, the Apostles, what even Christ Himself was, means immense labor - but what a reward! . . . What I have been saying to you will sound hard to one who does not love Christ. But those who consider worldly pomp a mere offscouring and all under the sun mere nothingness if only they may win Christ, those who are dead with Christ, have risen with Him and have crucified the flesh with its vices and concupiscences - they will echo the words: "Who shall separate us from the charity of Christ?"
Source: Spiritus Paraclitus (Vatican.va)