Oh, indeed. Torquemada, for example, wasn't doing anything against his conscience. Neither was Hitler, or Stalin, or Mao. The all thought they were doing the most honorable thing they could with the challenges and limitations they were faced with. As a christian religeous argument about morality, this seems pretty much out on the ragged edge of bizarre.
I didn't realize you had such outstanding powers of mind reading across time. Why don't you report that to the National Academy of Science too.
Romans 2:14 For when the Gentiles, which have not the law, do by nature the things contained in the law, these, having not the law, are a law unto themselves: 15 Which shew the work of the law written in their hearts, their conscience also bearing witness, and their thoughts the mean while accusing or else excusing one another;)