The words would look nice on a wall with a buffet. Do you have a buffet? Also, I am assuming that you are going to change that light over the table.

The rug is long enough, however it is not wide enough. It needs to be large enough for chairs to be pulled out & still remain on the rug. With a new light fixture, perhaps a rectangular one & the wallpaper removed, this should be a nice room for dining.

Add the plaques with the quotes to the wall opposite the wallpapered wall. Space them evenly about 6 " apart at about seated eye level. Add some window coverings to make the room more special. Install close to the ceiling & down to the floor. If that is a slider get grommet top or clip top drapes to easily open & close them.

Suggestions for a light:

Albiano Rectangle 2-Light Bronze Pendant · More Info

Hinkley Lighting 4544RB Sloan Regency Bronze Linear 5 Light Chandelier · More Info

Kimura Large Pendant, Matte Black, Brushed Nickel, Tan Linen Shade · More Info

I'd think that on the wall opposite the wallpapered wall, you can fit a sideboard or maybe a console table. Something that is not fully closed in.

You have beautiful floors and your wooden table is really nice. You need to think about the outdoors that is right outside this room and bring it in thru paint, lighting, and wall decor. I would paint the walls using soft hues. A good place for your quote would be above the sliding doors. You need to soften the sliding doors with panels that can be pulled at night so that you don't have a black wall when it's dark out.

You could find a metal working shop to see if they do this kind of work for your quote.

Not sure if you want to keep the wallpaper or if you have to keep the wallpaper. Consider painting over it to declutter the room visually. Then you can decorate anyway you like - you won't have to decorate "around" something. Good luck.