Our starting-point must be the fact that God cannot be named... no mind has yet contained or language embraced God's substance in its fullness. No, we use facts connected with Him to outline qualities that correspond with Him, collecting a faint and feeble mental image from various quarters. Our noblest theologian is not one who has discovered the whole - our earthly shackles do not permit us the whole - but one whose mental image is by comparison fuller, who has gathered in his mind a richer picture, outline, or whatever we call it, of the truth.
Gregory of NazianzusIt is more important that we should remember God than that we should breathe: indeed, if one may say so, we should do nothing else besides.
Gregory of NazianzusAlmost every sin is committed for the sake of sensual pleasure; and sensual pleasure is overcome by hardship and distress arising either voluntarily from repentance, or else involuntarily as a result of some salutary and providential reversal. 'For if we would judge ourselves, we should not be judged; but when we are judged, we are chastened by the Lord, so that we should not be condemned with the world.' (1 Cor. 11:31-32).
Gregory of NazianzusI seem indeed to hear that voice, from Him Who gathers together those who are broken, and welcomes the oppressed: I have given you up, and I will help you. In a little wrath I struck you, but with everlasting mercy I will glorify you (cf. Isa. 54:8). The measure of His kindness exceeds the measure of His discipline.
Gregory of NazianzusWhat is the right time [to discuss theology]? Whenever we are free from the mire and noise without, and our commanding faculty is not confused by illusory, wandering images, leading us, as it were, to mix fine script with ugly scrawling, or sweet-smelling scent with slime. We need actually 'to be still' (Ps. 46:10) in order to know God, and when we receive the opportunity, 'to judge uprightly' (Ps. 75:2) in theology.
Gregory of Nazianzus