See in Socrates (1. i. c. 8), or rather in Theodoret (1. i. c. 12), an original letter of Eusebius of Caesarea, in which he attempts to justify his subscribing the Homoousion. The character of Eusebius has always been a problem; but those who have read the second critical epistle of Le Clerc (Ars Critica, tom. iii. p. 30-69) must entertain a very unfavourable opinion of the orthodoxy and sincerity of the bishop of Caesarea.