I won't accuse you of fabricating these quotes, but I think you too credulously believe anything you read that supports your beliefs rather than thinking critically and objectively. You have a conclusion in mind and seek to support it, rather than seeking to understand.
I know for a fact that much of what's said by those who push a psuedo-scientific opposition to homosexuality is either wildly misconstrued, distorted, or outright fabricated.
Dr. Paul Cameron is the prime perpetrator of misinformation on this subject and I know you like to cite his work a lot, so you can see why I have my doubt about these other quotes you've posted.
I don't blame you as those quotes are extremely damaging to the pro-homosexual cause, but I gave you the cite to the Levay quote. It's from Discover Magazine, the March 1994 issue. Here's everything you need: Source.
You can purchase the article online as I did at Discover's website. Before I made the purchase I googled and googled and kept finding the source as Discover. Not once did I find a quote stating anything other than the above.
I won't accuse you of fabricating these quotes, but I think you too credulously believe anything you read that supports your beliefs rather than thinking critically and objectively. You have a conclusion in mind and seek to support it, rather than seeking to understand.
Thanks for the vote of confidence! ;-) If you knew me you'd know something I repeat quite often: context is everything. I will do whatever it takes to find the context of something before I quote it.
You can find the Spitzer quote here: Historic Gay Advocate Now Believes Change is Possible
I rigorously researched this information as well and even found the quote at gay sites. From what I can tell, no where is this quote denied. Google it if you want, and please let me know if you find anything to the contrary.