413The Unconfounded. 477The Impassible. 530Demonstrations by Syllogisms. 530That God the Word is Immutable. 533Proofs that the Union was without Confusion. 536Proof that the Divinity of the Saviour is Impassible. 539Letters of the Blessed Theodoret, Bishop of Cyprus. 539To an Unknown Correspondent. 540To the Same. 541To Bishop Irenæus. 544Festal. 545Festal. 546Festal. 547To Theonilla. 548To Eugraphia. 549To an Anonymous Correspondent. 550To the Learned Elias. 551To Flavianus Bishop of Constantinople. 552To the Bishop Irenæus. 553To Cyrus. 554To Alexandra. 557To Silvanus the Primate. 558To Bishop Irenæus. 560To the Deaconess Casiana. 561To Neoptolemus. 562To the Presbyter Basilius. 563To the Presbyter Martyrius. 564To the Learned Eusebius. 567To Count Ulpianus. 568To the Patrician Areobindas. 569To Andreas Bishop of Samosata. 570Festal. ix