Isaac loved solitude and stillness, but any kind of closing in upon himself, any thought of his own salvation apart from his brethren, was entirely alien to him. He possessed that ‘merciful heart’ which is characterized by having compassion on all creatures, not only Christians, but also apostates, animals, and demons. His personal prayer, like liturgical prayer, grew to a cosmic scale embracing not only neighbors and strangers, but the whole of humanity and the entire universe.
(Hilarion Alfeyev, The Spiritual World of Isaac the Syrian, p. 202)
Fraternized 