For God, He said, gave us understanding, that we might chase away all ignorance, and have the right judgment of things, and that using this as a kind of weapon and light against all that is grievous or hurtful, we might remain in safety. But we betray the gift for the sake of things superfluous and useless.
St. John Chrysostom
Homily 20 and 21 on Matthew 6, 4th Century
A brother, more thrifty than covetous, ... left behind him at his death a hundred pieces of money which he had earned by weaving linen. ... a council was held as to what should be done [with the money] ... However, Macarius, Pambo, Isidore and the rest of those called fathers, speaking by the Spirit, decided that they should be interred with their owner, with the words: "Thy money perish with thee."
St. Jerome
Letter 22 to Eustochium
The truth is that people are frightened of being poor because they have no faith in Him who promised to provide all things needful to those who seek the kingdom of God (cf. Matt. 6:33). It is this fear that spurs them, even when they are endowed with all things, and it prevents them from ever freeing themselves from this sickly and baneful desire. They go on amassing wealth, loading themselves with a worthless burden or, rather, enclosing themselves while still living in a most absurd kind of tomb.
St. Gregory Palamas
To the Most Reverend Nun Xenia no. 32, Philokalia Vol. 4 edited by Palmer, Sherrard and Ware; Faber and Faber pg. 305, 14th century
There is an old saying: 'Excesses meet.' Too much fasting and too much eating come to the same end. Keeping too long a vigil brings the same disastrous cost as ... sluggishness... Too much self-denial brings weakness and induces the same condition as carelessness. Often I have seen men who would not be snared by gluttony fall, nevertheless, through immoderate fasting and tumble in weakness into the very urge which they had overcome. Unmeasured vigils and foolish denial of rest overcame those whom sleep could not overcome. Therefore, 'fortified to right and to left in the armor of justice,' as the apostle says (2 Cor. 6:7), life must be lived with due measure and, with discernment for a guide, the road must be traveled between the two kinds of excess so that in the end we may not allow ourselves to be diverted from the pathway of restraint which has been laid down for us nor fall through dangerous carelessness into the urgings of gluttony and self-indulgence.
St. John Cassian
Conferences, Conference Two: On Discernment no. 16; Paulist Press pg. 76, 5th century