St Josemaría had a special friendship with the Holy Souls, and used to say, “The Holy Souls in Purgatory are my good friends.”
The Holy Souls in Purgatory. Out of charity, out of justice, and out of excusable selfishness — they have such power with God! — remember them often in your sacrifices and in your prayers. May you be able to say when you speak of them, “My good friends the souls in purgatory.”
The Way, 571
Purgatory shows God’s great mercy and washes away the defects of those who long to become one with Him.
If you live the “life of childhood”, you should have the sweet tooth of a child, a “spiritual sweet tooth!” Like those “of your age”, think of the good things your Mother keeps. And do so many times a day. It just takes a moment… Mary… Jesus… the Tabernacle… Communion… Love… suffering… the Holy Souls in Purgatory… those who are fighting: the Pope, the priests… the faithful… your soul… the souls of people in your family… the Guardian Angels… sinners…
The Way, 898
You shouldn’t want to do things to gain merit, nor out of fear of the punishments of purgatory. From now on, and always, you should make the effort to do everything, even the smallest things, to please Jesus.
The Forge, 1041
In the face of suffering and persecution, a certain soul with supernatural sense said, “I prefer to take a beating down here rather than get it in Purgatory.”
The Forge, 1046
With thanks to http://www.josemariaescriva.info