Constantine declared that slaves who commit suicide are thieves to their master(s).
Aristotle prohibited suicide because it is against virtue
Plato prohibited suicide except (1) condemnation to death, (2) painful and incurable illness, (3) misery
St Augustine’s City of God prohibited suicide based on the commandment that “thou shalt not kill” and that man does not have the right to expedite God’s admittance into heaven.
Period: Jan 1, 1265 to Jan 1, 1274
St. Thomas Aquinas suicide is (1) offense against nature, (2) attack on society, and (3) offense against God.
Frankish synods forbade prayers and Christian burial for suicide