Charles

“Give us, O Lord, a steadfast heart, which no unworthy affection may drag downwards; give us an unconquered heart, which no tribulation can wear out; give us an upright heart, which no unworthy purpose may tempt aside. Bestow upon us also, O Lord our God, understanding to know you, diligence to seek you, wisdom to find you, and a faithfulness that may finally embrace you; through Jesus Christ our Lord.”
― Thomas Aquinas

“Grant, O Lord my God, that I may never fall away in success or in failure; that I may not be prideful in prosperity nor dejected in adversity. Let me rejoice only in what unites us and sorrow only in what separates us. May I strive to please no one or fear to displease anyone except Yourself. May I see always the things that are eternal and never those that are only temporal. May I shun any joy that is without You and never seek any that is beside You. O Lord, may I delight in any work I do for You and tire of any rest that is apart from You. My God, let me direct my heart towards You, and in my failings, always repent with a purpose of amendment.”
― St. Thomas Aquinas

“For you will certainly carry out God's purpose, however you act, but it makes a difference to you whether you serve like Judas or like John.”
― C.S. Lewis, The Problem of Pain

“Three things are necessary for the salvation of man: to know what he ought to believe; to know what he ought to desire; and to know what he ought to do.”
― Thomas Aquinas