“If the enemy tortures, it defines their moral evil and all intelligence gleaned from such coercion is self-evidently false propaganda. If we do it, it isn't wrong, and it leads to good intelligence.
Got that? And these people have the gall to describe their ideological opponents as moral relativists.”

Wright Jr. 87 Years Behind the Black Curtain: An Autobiography. 1965

Part 3, Ch. 1 § 1.
The Origins of Totalitarianism (1951)

What Would You Substitute for the Bible as a Moral Guide? (1900)
Context: All “inspired books,” teaching that what the supernatural commands is right, and right because commanded, and that what the supernatural prohibits is wrong, and wrong because prohibited, are absurdly unphilosophic. And all “inspired books,” teaching that only those who obey the commands of the supernatural are, or can be, truly virtuous, and that unquestioning faith will be rewarded with eternal joy, are grossly immoral. Again I say: Intelligence is the only moral guide.

Flowers for Algernon (1966)
Context: Don't misunderstand me," I said. "Intelligence is one of the greatest human gifts. But all too often a search for knowledge drives out the search for love. This is something else I've discovered for myself very recently. I present it to you as a hypothesis: Intelligence without the ability to give and receive affection leads to mental and moral breakdown, to neurosis, and possibly even psychosis. And I say that the mind absorbed in and involved in itself as a self-centered end, to the exclusion of human relationships, can only lead to violence and pain.

Source: Catch-22

On claims of waterboarding as being impedimental in as quoted in "John McCain to Bush apologists: Stop lying about Bin Laden and torture" by Greg Sar in The Washington Post (12 May 2011) http://www.washingtonpost.com/blogs/plum-line/post/john-mccain-to-bush-apologists-stop-lying-about-bin-laden-and-torture/2011/03/03/AF10AnzG_blog.html - YouTube video of McCaine's speech http://www.youtube.com/watch?v=3I94Yb4KUic
2010s, 2011
Context: We did not learn Abu Ahmed’s real name or alias as a result of waterboarding or any "enhanced interrogation technique" used on a detainee in U. S. custody. None of the three detainees who were waterboarded provided Abu Ahmed’s real name, his whereabouts, or an accurate description of his role in Al-Qaeda. … In fact, not only did the use of "enhanced interrogation techniques" on Khalid Sheikh Mohammed not provide us with key leads on bin Laden’s courier, Abu Ahmed; it actually produced false and misleading information. Khalid Sheikh Mohammed specifically told his interrogators that Abu Ahmed had moved to Peshawar, got married, and ceased his role as an Al-Qaeda facilitator — which was not true, as we now know. … It was not torture or cruel, inhuman, and degrading treatment of detainees that got us the major leads that ultimately enabled our intelligence community to find Osama bin Laden. … we are again engaged in this important debate, with much at stake for America’s security and reputation. Each side should make its own case, but do so without making up its own facts.

Source: Words of a Sage : Selected thoughts of African Spir (1937), p. 59.