It was only when I lay there on rotting prison straw that I sensed within myself the first stirrings of good. Gradually it was disclosed to me that the line separating good and evil passes not through states, nor between classes, nor between political parties either—but right through every human heart—and through all human hearts. This line shifts. Inside us, it oscillates with the years. Even within hearts overwhelmed by evil, one small bridgehead of good is retained; and even in the best of all hearts, there remains a small corner of evil.
That is why I turn back to the years of my imprisonment and say, sometimes to the astonishment of those about me: ‘Bless you, prison!’ I…have served enough time there. I nourished my soul there, and I say without hesitation: ‘Bless you, prison, for having been in my life!
Aleksandr Solzhenitsyn, The Gulag Archipelago