Who can estimate the misery that has been caused by this most infamous doctrine of eternal punishment? Think of the lives it has blighted — of the tears it has caused — of the agony it has produced. Think of the millions who have been driven to insanity by this most terrible of dogmas. This doctrine renders God the basest and most cruel being in the universe. Compared with him, the most frightful deities of the most barbarous and degraded tribes are miracles of goodness and mercy. There is nothing more degrading than to worship such a god. Lower than this the soul can never sink. If the doctrine of eternal damnation is true, let me share the fate of the unconverted; let me have my portion in hell, rather than in heaven with a god infamous enough to inflict eternal misery upon any of the sons of men.

Robert Green Ingersoll (1833-1899) American lawyer, agnostic, orator

Lecture (1874-05-03), “Heretics and Heresies,” Free Religious Society, Kingsbury Hall, Chicago
    (Source)

Collected in The Gods and Other Lectures (1876).