Give us, O Lord, a steadfast heart

Give us, O Lord, a steadfast heart, which no selfish desires may drag downwards; give us an unconquered heart, which no troubles can wear out; give us an upright heart, which no unworthy ambitions may tempt aside. Give us also, O Lord our God, understanding to know you, perseverance to seek you, wisdom to find you, and a faithfulness that may finally embrace you; through Jesus Christ our Lord. Amen.

Thomas Aquinas (c. 1225-74)