At the very core of the Latin religion there lay that profound moral impulse which leads men to bring earthly guilt and earthly punishment into relation with the world of the gods, and to view the former as a crime against the gods, and the latter as its expiation.

The execution of the criminal condemned to death was as much an expiatory sacrifice offered to the divinity as was the killing of an enemy in just war; the thief who by night stole the fruits of the field paid the penalty to Ceres on the gallows just as the enemy paid it to mother earth and the good spirits on the field of battle.

The profound and fearful idea of substitution also meets us here: when the gods of the community were angry and nobody could be laid hold of as definitely guilty, they might be appeased by one who voluntarily gave himself up (-devovere se-); noxious chasms in the ground were closed, and battles half lost were converted into victories, when a brave burgess threw himself as an expiatory offering into the abyss or upon the foe.

The "sacred spring" was based on a similar view; all the offspring whether of cattle or of men within a specified period were presented to the gods.

If acts of this nature are to be called human sacrifices, then such sacrifices belonged to the essence of the Latin faith; but we are bound to add that, far back as our view reaches into the past, this immolation, so far as life was concerned, was limited to the guilty who had been convicted before a civil tribunal, or to the innocent who voluntarily chose to die.