Tertullian

“ Nor let this separation from the world alarm you; for if we reflect that the world is more really the prison, we shall see that you have gone out of a prison rather than into one. The world has the greater darkness, blinding men’s hearts. The world imposes the more grievous fetters, binding men’s very souls. The world breathes out the worst impurities—human lusts. The world contains the larger number of criminals, even the whole human race. ”

“ Sadness may be there for him who sighs for the world’s enjoyments. The Christian outside the prison has renounced the world, but in the prison he has renounced a prison too. It is of no consequence where you are in the world—you who are not of it. And if you have lost some of life’s sweets, it is the way of business to suffer present loss, that after gains may be the larger. Thus far I say nothing of the rewards to which God invites the martyrs. Meanwhile let us compare the life of the world and of the prison, and see if the spirit does not gain more in the prison than the flesh loses. ”

“ You have no occasion to look on strange gods, you do not run against their images; you have no part in heathen holidays, even by mere bodily mingling in them; you are not annoyed by the foul fumes of idolatrous solemnities; you are not pained by the noise of the public shows, nor by the atrocity or madness or immodesty of their celebrants; your eyes do not fall on stews and brothels ”