“An avidity to punish is always dangerous to liberty. It leads men to stretch, to misinterpret, and to misapply even the best of laws. He that would make his own liberty secure must guard even his enemy from oppression; for if he violates this duty he establishes a precedent that will reach to himself.”
The justification to use what has heretofore been known as torture, in the name of the very same principles that prohibit such action as immoral, illegal, and inhumane, is to justify the nullification of those very same principles.
It cannot be explained away as a necessary evil. It is merely evil creeping into soul of a nation.