It says: "Ζω τόσα χρόνια σ`αυτό τον κόσμο και δε γνώρισα ούτε ένα κακό άνθρωπο παρά μόνο τον εαυτό μου".
Translated it says: "I have lived so many years in this world, yet I have never met any evil person except for myself alone."
The source of this quote appears to be an anonymous "Ascetic"
.