St Cyril of Alexandria (370 - 444)

From Universalis.com, about the saint whose feast is celebrated today, 27th June (formerly 28th of January in the Latin Church). Universalis provides this excellent brief on the "doctor of the Incarnation":

	....    In 428, Nestorius, the new Patriarch of Constantinople (and hence one of the most important bishops in the world) made statements that could be interpreted as denying the divinity of Christ. The dual nature – human and divine – has always been hard for us to accept or understand, and if it seems easy it is only because we have not thought about it properly. Those who dislike problems have had two responses: to deny the human nature of Christ or to deny his divinity: and either leads to disaster, since both deny the Incarnation and hence the divinisation of human nature.
	... Seen from fifteen centuries later, the proceedings seem melodramatic and absurd: Cyril arriving at the Council of Ephesus accompanied by fifty bishops wielding baseball bats (or the fifth-century equivalent); the Emperor, burdened with a sister who supported Cyril and a wife who supported Nestorius; the ratification of the contradictory decrees of both the council that supported Cyril and the council that supported Nestorius; the imprisonment of both bishops; the bribery...
	To revere Cyril of Alexandria is not to approve the methods he used: he fought according to the conventions of the time, and with its weapons. But he never sought to destroy Nestorius or any of his opponents, only to win the day for the truth of salvation: would that controversies today were fought with such pure motives.
	After the fireworks of the Council, Cyril was moderate and conciliatory, and sought to reconcile to the Church any Nestorians who were willing to engage in dialogue. It is largely through his efforts that we can celebrate (and still fail to understand) the two natures of Christ, and that we can address Mary as “Mother of God”. It is as a theologian rather than as a politician that Cyril is honoured.

Read the whole piece from universalis, or a longer article from the Catholic Encyclopedia.