Miklós Nyiszli said this quote

Poor friend and learned physician, my sensitive and gentle companion, instead of treating and curing the sick you yourself have fallen beneath the yoke of death, and now belong to death's kingdom. For many months you have witnessed such suffering and horror as the human mind can scarcely conceive, as he who sees cannot believe. Perhaps it is for the best that your nerves have betrayed you, that a benevolent veil of forgetfulness has fallen upon your mind. Now, at least, you need not fret or worry about what the future may hold in store for you.