Favorite Catholic Quotations

Eric Pavlet at Inside Catholic found some great ones:

• Bd. Teresa of Calcutta: "God does not ask us to be successful; he asks us to be faithful."
• St. Catherine of Siena: "If you are what you should be, you will set the world on fire."
• St. Augustine: "If you believe what you like in the gospels, and reject what you don't like, it is not the gospel you believe, but yourself."
• Also St. Augustine: "Seek not to understand that you may believe, but believe that you may understand.
• And yet again St. Augustine: "Our souls are restless, O Lord, until they rest in You."
  St. Thomas Aquinas: "Contemplate and give to others the fruit of your contemplation."

Others?