About John Emerich Edward Dalberg-Acton:
John Emerich Edward Dalberg-Acton, 1st Baron Acton is perhaps best known for the remark, "Power tends to corrupt, and absolute power corrupts absolutely. Great men are almost always bad men." His key idea has been tested in laboratory settings under strongly incentivized conditions and with real manipulations of power and confirms what he has suggested: that power corrupts.