St. John of Kronstadt
[My Life in Christ: Part 1; Holy Trinity Monastery pg. 46]
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"The passion of self-esteem is a three-pronged barb heated and forged by the demons out of vanity, presumption and arrogance. Yet those who dwell under the protection of the God of heaven (cf. Ps. 91.1) detect it easily and shatter its prongs, for through their humility they rise above such vices and find repose in the tree of life."
[Philokalia, Vol. 4]
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"Because the Deity is goodness itself, true mercy and an abyss of loving bounty - or, rather, He is that which embraces and contains this abyss, since He transcends every name that is named (cf. Eph. 1:21) and everything we can conceive - we can receive mercy only by union with Him."
St. Gregory Palamas
(On Prayer and Purity of Heart no. 1, The Philokalia Vol. 4 edited by Palmer, Sherrard and Ware; Faber and Faber pg. 343)