Καὶ ποῖον, λέγει, ἀδικῶ, μὲ τὸ νὰ κρατῶ γιὰ τoν ἐαυτόν μου αὐτὰ ποῦ μου ἀνήκουν; Ποία, εἰπέ μου, εἶναι αὐτὰ ποῦ σου ἀνήκουν; Ἀπὸ ποῦ τὰ ἔλαβες, καὶ τ… - Basil of Caesarea

We must try to keep the mind in tranquility. For just as the eye which constantly shifts its gaze, now turning to the right or to the left, now incessantly peering up and down, cannot see distinctly what lies before it, but the sight must be fixed firmly on the object in view if one would make his vision of it clear, so too man's mind when distracted by his countless worldly cares cannot focus itself distinctly on the truth.

Φθονεῖς μάλιστα τοὺς ἀνθρώπους γιὰ τὴν ἀπόλαυση τῶν ἀγαθῶν, καὶ δημιουργεῖς μέσα στὴν ψυχή σου πονηροὺς συλλογισμούς, φροντίζοντας ὄχι πῶς νὰ χορηγήσεις στὸν καθένα ὅ, τι τοῦ χρειάζεται, ἀλλὰ πῶς θὰ τὰ ἀποθηκεύσεις ὅλα, καὶ ἔτσι θὰ ἀποστερήσεις ὅλους ἀπὸ τὴν ὠφέλεια ποὺ θὰ εἶχαν ἀπὸ αὐτά.

You should not surrender to these men once for all the rudders of your mind, as if of a ship, and follow them whithersoever they lead; rather, accepting from them only that which is useful, you should know that which ought to be overlooked. What, therefore, these things are, and how we shall distinguish between them, is the lesson which I shall teach you.