Thomas a Kempis, Des imitations du Christ.
Jesus has many who love his kingdom in heaven, but few who bear his cross. He has many who desire comfort, but few who desire suffering. He finds many to share his feast, but few his fasting. All desire to rejoice with him, but few are willing to suffer for his sake. Many follow Jesus to the breaking of bread, but few to the drinking of the cup of his passion. Many admire the miracles but few follow him to the humiliation of his cross. Many love Jesus as long as no hardship touches them… They who love Jesus for His own sake, and not for the sake of the comfort for themselves, bless Him in every trial and anguish of heart, no less than in the greatest joy. And were He never willing to bestow comfort on them, they would still always praise Him and give Him thanks.
Thomas a Kempis, Of the Imitations of Christ.