From Etty Hillesum's diary, March 27, 1942:

What a bizarre new landscape, so full of eerie fascination, yet one we might also come to love again. We human beings cause monstrous conditions, but precisely because we cause them we soon learn to adapt ourselves to them. Only if we become such that we can no longer adapt ourselves, only if, deep inside, we rebel against every kind of evil, will be be able to put a stop to it. Airplanes, streaking down in flames, still have a weird fascination for us—even aesthetically—though we know, deep down, that humans beings are being burned alive. As long as that happens, while everything within us does not yet scream out in protest, so long will we find ways of adapting ourselves, and the horrors will continue.

"...so long will we find ways of adapting ourselves, and the horrors will continue."