Diamonds are found only in the dark places of the earth, truths are found only in the depths of thought. - Victor Hugo

So long as there shall exist, by reason of law and custom, a social condemnation, which, in the face of civilisation, artificially creates hells on earth, and complicates a destiny that is divine, with human fatality; so long as the three problems of the age — the degradation of man by poverty, the ruin of woman by starvation, and the dwarfing of childhood by physical and spiritual night — are not solved; so long as, in certain regions, social asphyxia shall be possible; in other words, and from a yet more extended point of view, so long as ignorance and misery remain on earth, books like this cannot be useless.

With moral degradation goes political degradation. Conclusion, Part First, III

One can no more keep the mind from returning to an idea than the sea from returning to a shore. For a sailor, this is called the tide; in the case of the guilty it is called remorse. God stirs up the soul as well as the ocean.