Vision 81 is a Grimoire card from the original Destiny (Destiny 1), found under Allies → Osiris. Grimoire cards held most of the game's lore and were read on Bungie.net and in the companion app, not in the game itself.
Card text
This journey begins with doubt.
And ends in solace.
One by one they fall, and you realize you are alone.
There, in the shadow of night, you see the world splinter, the Darkness thrive.
And you fight, with more than your Light... you use your pain.
You remember its source, the way it gained its ground.
But you never wavered. You never believed.
You loved her. How couldn't you?
Listen, that's her calling... you back.
But you know now that is where you will die.
And ends in solace.
One by one they fall, and you realize you are alone.
There, in the shadow of night, you see the world splinter, the Darkness thrive.
And you fight, with more than your Light... you use your pain.
You remember its source, the way it gained its ground.
But you never wavered. You never believed.
You loved her. How couldn't you?
Listen, that's her calling... you back.
But you know now that is where you will die.
Grimoire text written by Bungie, shown as it appears in the Destiny 1 game files.