at boy, because in the first place he is disobedient, and secondly
is injuring his health. Thus persons who indulge in sinful habits may
commit more than one kind of sin, for besides the sins committed by the
habits themselves, these vices may injure their health and bring
sickness and disease upon their bodies.

368 Q. What is forbidden by the Fifth Commandment?
A. The Fifth Commandment forbids all willful murder, fighting, anger,
hatred, revenge, and bad example.

Therefore it forbids all that might lead to murder. So we can violate
any of the Commandments by doing anything that leads to breaking them.
"Revenge" is a desire to injure others because they injured you.

369 Q. What is the Sixth Commandment?
A. The Sixth Commandment is: Thou shalt not commit adultery.

370 Q. What are we commanded by the Sixth Commandment?
A. We are commanded by the Sixth Commandment to be pure in thought and
modest in all our looks, words, and actions.

We should be most careful about this Commandment, because almost every
violation of it is a mortal sin. For example, if you steal only a
little, it is a venial sin; for in stealing the greatness of the sin
will depend upon the amount you steal; but if you do a real bad action,
or think a real bad thought against the Sixth Commandment, it will be a
mortal sin, no matter how short the time. Again, we have more
temptations against this Commandment, for we are tempted by our own
bodies and we cannot avoid them: hence the necessity of being always
guarded against this sin. It enters into our soul through our senses;
they are, as it were, the doors of our soul. It enters by our eyes
looking at bad objects or pictures; by our ears listening to bad
conversation; by our tongue saying and repeating immodest words, etc. If
then, we guard all the doors of our soul, sin cannot enter. It would be
foolish to lock all the doors in your house but one, for one will
suffice to admit a thief, and we might as well leave them all open as
one. So, too, we must guard all the senses; for sin can enter by one
only as well as by all.

371 Q. What is forbidden by the Sixth Commandment?
A. The Sixth Commandment forbids all unchaste freedom with another's
wife or husband: also all immodesty with ourselves or others in looks,
dress, words, or actions.

372 Q. Does the Sixth Commandment forbid the reading of bad and immodest
books and newspapers?
A. The Sixth Commandment does forbid the reading of bad and immod