S. Basil the Great, when travelling from place to place, to observe the highest forms of ascetic life, had met with Eustathius at Tarsus, and formed a lasting friendship with a man whom he describes as “exhibiting something above human excellence,” and of whom, after the painful dissensions which embittered Basil’s later life, that great saint could say, that from childhood to extreme old age he (Eustathius) had watched over himself with the greatest care, the result of his self-discipline being seen in his life and character Basil, Epist. 244.  Compare Newman, Preface to Catechetical Lectures, p. iv..