...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.
John of KronstadtHe who is insolent towards men is insolent towards God... Respect in man the grand, inestimable image of God and be forbearing towards the faults and errors of fallen man, so that God may be forbearing towards your own.
John of Kronstadt...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).
John of KronstadtAs the Holy Trinity, our God is One Being, although Three Persons, so, likewise, we ourselves must be one. As our God is indivisible, we also must be indivisible, as though we were one man, one mind, one will, one heart, one goodness, without the smallest admixture of malice - in a word, one pure love, as God is Love. That they may be one, even as We are One (John 17:22).
John of Kronstadt