Chapter 30 — Part III: The Decalogue — The Seventh Commandment
Section 8. Desire Of Stealing Forbidden — But, besides actual theft, that is, the outward commission, the will and desire are also forbidden by the law of God. The law is spiritual and concerns the soul, the source of our thoughts and designs. From the heart, says our Lord in St. Matthew, come forth evil thoughts, murders, adulteries, fornications, thefts, false testimonies.