Abbot of the monastery on Mount Sinai. Author of the Ladder of Divine Ascent (Klimax), a foundational text of Eastern Christian ascetical and mystical theology.
The Ladder of Divine Ascent depends pervasively on Evagrian ascetic psychology (the eight logismoi, apatheia) though it carefully avoids Evagrius's name; the dependence is uncontroversial in scholarship.
John Climacus, Ladder of Divine Ascent, steps 13-15, 26 · Chryssavgis, John Climacus: From the Egyptian Desert to the Sinaite Mountain (Ashgate 2004), ch. 4
Maximus (d. 662) draws on Sinaitic ascetic literature; Climacus (d. c. 649) is older. Direct quotation is not formal but Maximus's spiritual anthropology shares Climacus's framework.
Louth, Maximus the Confessor (Routledge 1996), pp. 35-37
