So, I am using this fantastic game to learn a foreign language. Currently I use capture-screen software to make screenshots during dialogues which I can later use to refresh new words I had encountered. It would be much easier for me if I could simply copy and paste relevant dialogue from a txt file or something similar. There is a '/Data/Dialogues' folder that seems to contain what I am looking for but when I try to open those .dlg files using notepad++, there's mostly gibberish and some phrases in all languages that the game supports. I'd appreciate any help regarding proper opening those files. The second step would be to extract only phrases in the language I am interested in (since all these files are multi-language). Thank's in advance.

If you go here https://www.moddb.com/games/the-witcher/downloads/extra-tools
And download Tools.1.2.zip
It includes DLGView which can read the DLG files.
It looks like the attached pic, if that's any good to you.

Thanks a lot, I'll have a look at this.