2530 The struggle against carnal lust involves purifying the heart and prac tising temperance.

2531 Purity of heart will enable us to see God: it enables us even now to see things according to God.

2532 Purification of the heart demands prayer, the practice of chastity, purity of intention and of vision.
2533 Purity of heart requires the modesty which is patience, decency and discretion. Modesty protects the intimate centre of the person.

Article 10


You shall not covet.., anything that is your neighbour’s. You shall not desire your neighbour’s house, his field, or his manservant, or his maidservant, or his ox, or his ass, or anything that is your neighbour’s For where your treasure is, there will your heart be also. The tenth commandment unfolds and completes the ninth, which is concerned with concupiscence of the flesh. It forbids coveting the goods of another, as the root of theft, robbery and fraud, which the seventh commandment forbids. ‘Lust of the eyes’ leads to the violence and injustice forbidden by the fifth corn-


mandment.~’8 Avarice, like fornication, originates in the idolatry

prohibited by the first three prescriptions of the Law.319 The tenth commandment concerns the intentions of the heart; with the


ninth, it summarizes all the precepts of the Law.


The Disorder of Covetous Desires

2535 The sensitive appetite leads us to desire pleasant things we do not have, e.g., the desire to eat when we are hungry, or to warm
ourselves when we are cold. These desires are good in themselves;


but often they exceed the limits of reason and drive us to covet

unjustly what is not ours and belongs to another or is owed to him. 2536 The tenth commandment forbids greed and the desire to
amass earthly goods without limit. It forbids avarice arising from a


passion for riches and their attendant power. It also forbids the

desire to commit injustice by harming our neighbour in his temporal goods: When the Law says, ‘You shall not covet’, these words mean that we