Nicetas Stethatos

Niketas Stethatos
Born	c. 1005
Died	c. 1090
Venerated in	Eastern Orthodox Church

Niketas Stethatos (Greek: Νικήτας Στηθᾶτος, Latin: Nicetas Pectoratus; c. 1005 – c. 1090) was a Byzantine mystic and theologian who is considered a saint by the Eastern Orthodox Church. He was a follower of Symeon the New Theologian and wrote the most complete biography of Symeon, Life of Symeon.

Niketas Stethatos was born c. 1005 and entered the Monastery of Stoudios in Constantinople at the age of fourteen. He became a close disciple of Symeon the New Theologian, eventually writing the most complete biography of his teacher, the Life of Symeon. Niketas later became abbot of the Monastery of Stoudios. The sobriquet "Stethatos", meaning "courageous," was given to Niketas due to his speaking out against Constantine IX Monomachos having an illicit mistress.

Niketas Stethatos is credited with defending Symeon the New Theologian's teachings on hesychast prayer, which were considered subversive even by some eastern church authorities. Niketas gained the support of the Patriarch of Constantinople, Michael Cerularius, who eventually won Symeon's canonization. Niketas later supported Michael Cerularius in 1054, taking part in the conflict that became the East-West Schism, writing anti-Latin treatises criticizing the use of unleavened bread, Sabbath fasting, and the celibacy of priests.

Niketas' Vita, or Life of Symeon, is the most complete biography of Symeon the New Theologian. Niketas was also the editor of Symeon's own writings and talks. An edition of Symeon's works was distributed by Niketas following a vision he had of Symeon. Niketas' personal works include polemical writings and treatises on the soul, on paradise, on the meaning of hierarchy, and on the limits of human life. He wrote an unpublished hypotyposis on the private spiritual life expected of the Stoudios monks.

...
Wikipedia