The Gods are Athirst by Anatole France

Evariste Gamelin, as he sat, one day that a long, tedious case was before the Tribunal, on the jury-bench in the stifling court, closed his eyes and thought:

"Evil-doers, by forcing Marat to hide in holes and corners, had turned him into a bird of night, the bird of Minerva, whose glance pierced the dark recesses where conspirators lurked. Now it is a blue eye, cold and calm, that discovers the enemies of the State and denounces traitors with a subtlety unknown even to the Friend of the People, now asleep for ever in the garden of the Cordeliers. The new saviour of the country, as zealous and more keen-sighted than the first, sees what no man before had seen and with a lifted finger spreads terror broadcast. He discerns the fine, imperceptible shades of difference that divide evil from good, vice from virtue, which but for him would have been confounded, to the hurt of the fatherland and freedom, he marks out before him the thin, inflexible line outside which lies, to the right hand and to the left, only error, crime, and wickedness.