Edit 2: Here's the relevant part on the nasal spray (had to post it via a screenshot because Kindle does not allow copy/pasting text): http://imgur.com/kyysmbo
For this reason (and in particular for the purpose of text-to-speech) I use calibre and the Kindle plugin to convert my kindle books to a less artificially restricted format.
I've found a way to copy/paste from Kindle! Their software reader, at least the Windows version, allows copying:
...You may wonder how researchers did most of the oxytocin experiments related to bonding. They piped it (or drugs that neutralized it) directly into rodents’ brains— onto spots no larger than peppercorns. However, even if you could pipe it into an unloving mate’s brain, you’d have to squirt it in every time you were together. Bonds are only created when oxytocin is consistently released in response to a particular person.
Next time you read about
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.