Then we have something in common as I love paper too, a lot. Books, newspapers, even writing on paper. During my university years I loved taking notes on paper, always made my notes special, so I can picture the text in front of me and reading it, during exams.

By the way, is there any particular reason was having the flash on when taking pictures is not allowed?

Yes, there's a reason. Actually no matter where you go, what art gallery, museum you are visiting, flash is not allowed as it deteriorated the paintings, artworks. Imagine those paintings were painted in 1779, which means they are 243 years old. Back in those days the paint they used was not what painters are using today. Most of the paintings from those ear need restoration and high protection from light and temperature changes.