Discerning Hearts - Catholic Podcasts
BTP#3 Heaven In Faith Day 2 Prayer 1 – Bl. Elizabeth of the Trinity w/Dr. Anthony Lilles
Episode 3 Beginning to Pray: "Heaven in Faith" Day 2 Prayer 1 - "The Kingdom of God is Within You" - From "Heaven in Faith" found in The Complete Works vol 1: - 6. The same saint also says that "God is the center of the soul.