The Nazis regarded the murder of the feeble-minded and the mentally insane - intended to purify the race and maintain hereditary hygiene - as a form of euthanasia.

10 Real-Life Mad Scientists
Science, we are informed by conscientious historians of the discipline, is something that comes to us without anything we might call a “moral imperative” as to what we should or should not be doing with the knowledge. In fact, science has often been described as an “amoral” enterprise, which can be put to evil uses just as easily as good ones. Scientists themselves bear no responsibility to ensure how their discoveries are used by others.

But what if the scientist himself is a diabolical mad man?

Thank the FSM it doesn’t happen often, but here’s a list of ten people throughout history who fit the description of “Mad Scientist” because they used diabolical methods for their experiments. We can be thankful that this sort of research is not applauded today, nor are science students encouraged in these directions. But, they surely are interesting as historical footnotes.