Gonna amass sources, then reply.

The script is an ancient elven dialect. Upon further observation, it twists, the words becoming visible:

There are no gods. There is only the subject and the object, the actor and the acted upon. Those with will to earn dominance over others gain title not by nature but by deed.

I am Geldauran, and I refuse those who would exert will upon me. Let Andruil's bow crack, let June's fire grow cold. Let them build temples and lure the faithful with promises. Their pride will consume them, and I, forgotten, will claim power of my own, apart from them until I strike in mastery.

Cole: You're different, Solas. Sharper. You're in both places. Solas: I visit the Fade regularly. Perhaps you are sensing traces of it.

Solas: No. You exist to help others. You are kindness, compassion, caring. If you stop giving comfort, you would twist into something else, as you did before I suspect. Cole: Yes. I will not be that again. Solas: Good. Never forget your purpose. It is a noble one, even if this world does not understand.

Cole: You don't need to envy me, Solas. You can find happiness in your own way. Solas: I apologize for disturbing you, Cole. I am not a spirit, and sometimes it is hard to remember such simple truths. Cole: They are not gone so long as you remember them. Solas: I know. Cole: But you could let them go. Solas: I know that as well. Cole: You didn't do it to be right. You did it to save them. Inquisitor: Solas, what is Cole talking about? Solas: A mistake. One of many made by a much younger elf who was certain he knew everything. Cole: You weren't wrong, though.

Or

Inquisitor: Cole, I think Solas would like you to stop. Solas: It is no bother, Inquisitor. Cole is a spirit of compassion and this world is too bleak to spurn compassion offered freely. I will never know that for certain, Cole, but thank you for saying it.

Cole: He hurts, an old pain from before, when everything sang the same. Cole: You're real, and it means everyone could be real. It changes everything, but it can't.

Cole: They sleep, masked in a mirror, hiding, hurting, and to wake them... (Gasps.) Where did it go?

Also Dreamers were very common in the Elven Society and powerful mages themselves...

During the time of Elvhenan, a Dreamer elf who had perfected themselves no longer required the potion of water, honey and herbs used to keep mages alive during uthenera (this was determined by brushing the potion on the lips at the full moon and determining at the new moon if it had been absorbed or not). If no scent of the potion were detected later, such an elf no longer required outside sustenance.

Such elves were moved into beds of pure white, signifying their achievement. They may have resided at the top of ancient elven society, causing resentment amongst elven servants that led to murder during the waning days of Arlathan.

Look at Andruil as well.

One day Andruil grew tired of hunting mortal men and beasts. She began stalking The Forgotten Ones, wicked things that thrive in the abyss. Yet even a god should not linger there, and each time she entered the Void, Andruil suffered longer and longer periods of madness after returning.

Andruil put on armor made of the Void, and all forgot her true face. She made weapons of darkness, and plague ate her lands. She howled things meant to be forgotten, and the other gods became fearful Andruil would hunt them in turn..........But Mythal's magic sapped Andruil's strength, and stole her knowledge of how to find the Void