Instructing Children is the second means of Claret in doing the mission, which he believes that children are easy to teach rather than the adult ones. And there are other saints who dedicated themselves in teaching children in the Christian doctrines.

1. CHAPTER XVII
OTHER MEANS I MADE USE
OF TO DO GOOD
Second Means
Instructing Children

2. I always bore in mind the old saying:
"Pray to God and row for shore."
I put all my trust in God
because everything really
does depend on Him, above
all, the conversion of sinners,
which is a work of grace and
the greatest work of God.

3. Catechizing children.
The first thing I saw was the
instruction of children in
Christian doctrine--not only
because I have always felt a
strong inclination toward this
kind of education but also
because I have come to realize
its prime importance.

4. Catechism preserves them from error, vice, and
ignorance and more easily grounds them in virtue
because they are more docile than adults.
When the children receive a little holy
card for their attendance and diligence,
their parents and other adults read them at
home out of curiosity, and this often
results in their conversion, as I know from
experience.

5. Jesus said, "Let the little
children come to me and do
not hinder them. It is to just
such as these that the
kingdom of God belongs"
(Mark 10:14).
One of the things that has moved me most to
teach children is the example of Jesus Christ
and the saints.

6. St. Clement of AlexandriaSt. Denis Origen
St. John Chrysostom
St. Augustine
St. Gregory of Nyssa

7. St. Jerome
he was being consulted from far and near as the oracle of the
universe, was not ashamed to teach catechism to children. He
once told a widow, "Send me your children and I'll babble
with them~ I'll have less glory in men's eyes, but I'll be
glorious in God's.''
St. Gregory the Great
a great pope, despite his illness, spending as much
time as he could instructing young people. After
giving solid food to the strong, he was not
ashamed to provide milk for children.

8. Jean Gerson
dedicated himself constantly to catechizing children.
When he was criticized for this, he replied that he
could find no greater employment than in snatching
these little souls from the hellish serpent and in
watering these tender plants in the Church's garden
Venerable Master John-of Avila
dedicated to the instruction of children. He used to say that "the
winning of youth means the saving of the whole republic; for the
little become the great, and their hand will govern the republic.
A good education and the teaching of Christian doctrine is the
fountain and source of the public happiness and welfare, so
much so that miseducating the youth is like poisoning the
common water supply.''

9. Father Diego de Guzman
Son of the Count of Bailen and a disciple of the Venerable
Avila spent the entire 83 years of his life in teaching
Christian doctrine. He traveled through Spain and Italy
with great zeal and effectiveness, at the cost of great
personal pain and effort. He founded a Congregation in
Seville to continue teaching Christian doctrine as he had
done.

10. Also applied themselves to teaching Christian doctrine to children.
Lainez and Salmeron, envoys to the Council of Trent, were
ordered by St. Ignatius to teach catechism to children.
St. Ignatius St. Francis
Xavier
St. Francis
Borgia

11. St. Joseph Calasanctius and the
Venerable Cesar de Bus founded a
Congregation to teach children Christian
doctrine,the Sisters of Christian Doctrine.
Father Ignatius Martins
an eloquent orator who was preacher to the king of Portugal,
abandoned preaching and dedicated his whole life to
teaching children, a work in which he continued for
a span of 18 years.

12. Father Edmond Auger
an apostolic preacher, who was called "the
Gospel Trumpet" for his conversion of
40,000 heretics in France, was so deeply
committed to teaching catechism that at
his death it pleased God to allow him to be
seen ascending into heaven accompanied
by a host of angels and children. To
Isaiah's question, "Where is the teacher of
the little ones?"one might well answer,
"Here he is."

13. In view of all these examples, as well as others
I know but have omitted here, I was greatly
encouraged in my own constant inclination to
teach catechism to boys and girls. I have made
it my occupation as a student, priest,
administrator, missionary, and even as an
archbishop.
Because I love children and want them to be educated in
Christian doctrine, I have written four catechisms: one for small
children, from the time they begin talking until they reach seven;
one for country folk; another, more extensive one; and one fully
explained and illustrated.