without cease
ceaselessly; continually
Courage is not a quality one normally associates with mathematicians. Yet it should apply to people who work in their attics in secret for seven years without cease on a problem that has eluded the greatest mathematical minds since first proposed in 1637. Charles Krauthammer
By the nineteenth century... new circumstances called for new conformity enforcers... The government locked you in a house of penitence-a penetentiary-where your feelings of remorse would theoretically pummel you without cease. Howard Bloom