The most potent and acceptable prayer is the prayer that leaves the best effects. I don't mean it must immediately fill the soul with desire . . . The best effects are those that are followed up by actions-when the soul not only desires the honor of God, but really strives for it.
Teresa of AvilaAnyone who has the habit of speaking before God's majesty as if he were speaking to a slave, careless about how he is speaking, and saying whatever comes into his head and whatever he's learned from saying prayers at other times, in my opinion is not praying. Please, God, may no Christian pray in this way.
Teresa of Avila