...if you wish to get pure air into your room, or if you go for a walk in the fresh air, think of the pure and of the unclean heart. Many of us like to have pure air in the room (and this is an excellent habit), or are fond of walking in the fresh air, but they do not even think of the necessity of the purity of the spirit or heart (of, so to say, spiritual air, the breath of life); and, living in the fresh air, they allow themselves to indulge in impure thoughts, impure movements of the heart, and even impurity of language, and most impure carnal actions.

Avoid duplicity, that is, do not let your heart be divided between attachment to God and attachment to earthly things, 'You cannot serve God and mammon' (Mt. 6:24); cling to God alone, put your trust in Him alone; for the Devil, by inciting us to duplicity, seeks himself to gain possession of our heart, which is single and indivisible.

It is necessary to rouse the heart to pray, otherwise it will become quite dry. The attributes of prayer must be: love of God, sincerity, and simplicity.

Christ wishes to raise men up to heaven, and has given them all the means to attain this; whilst the Devil, who himself for his pride was cast down from heaven into the dominions of the air, wishes by every means to attach men to earthly,- sensual, transitory things, and, in order to attain this end, he employs the most powerful, most prodigious means.

...when seeking material light, remember the spiritual light which is indispensable for the soul, and without which it remains in the darkness of the passions, in the darkness of spiritual death. 'I am come as a light into the world,' says the Lord, 'that whosoever believeth on Me, should not abide in darkness' (Jn. 12:46).

The accursed one does not allow the eye of the heart to see the Lord or His saints. He darkens our heart in every way. He scatters faith, oppressing, burning and darkening us inwardly. We must look upon all such actions as illusions and falsehood, and break through this imaginary wall to the Lord, or to His Holy Mother, or His saints. As soon as you break through this wall you will be immediately saved. 'Your faith has made you whole' (Mt. 9:22).

...if you wish to get pure air into your room, or if you go for a walk in the fresh air, think of the pure and of the unclean heart. Many of us like to have pure air in the room (and this is an excellent habit), or are fond of walking in the fresh air, but they do not even think of the necessity of the purity of the spirit or heart (of, so to say, spiritual air, the breath of life); and, living in the fresh air, they allow themselves to indulge in impure thoughts, impure movements of the heart, and even impurity of language, and most impure carnal actions.