Julian (Apostata), Symposion oder Kronia 335A-336B:

[...]
When Marcus [Antoninus] had finished his speech, Hermes asked Constantine, “And what was the height of your ambition?”

“To amass great wealth,” he answered, “and then to spend it liberally so as to gratify my own desires and the desires of my friends.”

At this Silenus burst into a loud laugh, and said, “If it was a banker that you wanted to be, how did you so far forget yourself as to lead the life of a pastrycook and hairdresser? Your locks and your fair favour betokened this all along, but what you say about your motives convicts you.” Thus did Silenus sharply reprove Constantine.
[...]

As for Constantine, he could not discover among the gods the model of his own career, but when he caught sight of Pleasure [Τρυφή], who was not far off, he ran to her. She received him tenderly and embraced him, then after dressing him in raiment of many colours and otherwise making him beautiful, she led him away to Incontinence [Ἀσωτία].

There too he found Jesus, who had taken up his abode with her and cried aloud to all comers: “He that is a seducer, he that is a murderer, he that is sacrilegious and infamous, let him approach without fear! For with this water will I wash him and will straightway make him clean. And though he should be guilty of those same sins a second time, let him but smite his breast and beat his head and I will make him clean again. [Ὅστις φθορεύς, ὅστις μιαιφόνος, ὅστις ἐναγὴς καὶ βδελυρός, ἴτω θαρρῶν. ἀποφανῶ γὰρ αὐτὸν τουτῳὶ τῷ ὕδατι λούσας αὐτίκα καθαρόν, κἂν πάλιν ἔνοχος τοῖς αὐτοῖς γένηται, δώσω τὸ στῆθος πλήξαντι καὶ τὴν κεφαλὴν πατάξαντι καθαρῷ γενέσθαι]”

To him Constantine came gladly, when he had conducted his sons forth from the assembly of the gods. But the avenging deities none the less punished both him and them for their impiety, and exacted the penalty for the shedding of the blood of their kindred (1) [...].

(The Works of the Emperor Julian. Volume II. Ed. by Wilmer Cave Wright. Cambridge (Mass.)/London 1913, pp. 410-413)

(1) Konstantin hatte etliche seiner nächsten Angehörigen, u.a. seine Frau Fausta und seinen ältesten Sohn Crispus, ermorden lassen. Die übrigen Söhne, die ihm in der Herrschaft nachfolgten, waren Konstans, Konstantin II. und Konstantius.