I performed a quick search for you; this is from the Fallout Wikia page for The Sight. There are numerous 'sights' listed, I am sure one of them is the one you were looking for.
Also, remember, the game is still new so I reckon this to be Spoilers!
Diamond City holds answers, but they're locked tight. You ask them
what they know, but people's hearts are chained up with fear and
suspicion. But you find it. You find that heart that's gonna lead you
to your boy. Oh, it's... it's bright. So bright against the dark
alleys it walks. That's... that's what you need to do, kid. Follow the
signs to the bright heart.
Used in Jewel of the Commonwealth
You're looking for a man. He can help you, but he ain't gonna be the
man you expect. He's somewhere... deep... and dark. Surrounded by
folks with nothin' but cruel intentions. But there's... an echo...
Something in the past that can help you. When you meet the fat man,
and the angry woman, tell them to "remember the Quarry and Lilly June
on the rocks", and they'll let you and your friend pass.
Used in Unlikely Valentine
You're on the trail of the man who took your boy. I see a house.
Locked up tight. Chains put on by a smiling shark. But there's another
way. I can see it. A key. Lost and forgotten. Fallen down below.
Search the chairs beneath the house. They hold the secret.
Used in Getting a Clue
You walk into a house. The man who owns it has secrets. But he's no
fool. He hides everything in a closet with no doors. But I see him,
kid. He's sitting down. Brought out the red toolbox and the coffee.
Then he reaches beneath where he's working, and the closet opens.
Used in Getting a Clue
I can only see that you're on the right path. If you had any doubts in
your mind, you shouldn't. The man you're after. He's the one. He wears
all the pain he's caused like a shield. Be strong, kid. The Sight's
getting... foggy... but your energy is glowing brighter than you know.
You can win this. He can't hurt you anymore.
Used in Reunions
You're walking into a sea, but it's not water you're afraid of
drownin' in. It's something... invisible... but... radiant... It burns
everything in it, but... no... I can feel them. There's people.
Calling out to something. Chanting. They can show you the way...
but... they're so hard to read... Be careful around them, kid.
Used in The Glowing Sea
I see you... the mighty hunter... only what you're hunting ain't an
animal, or a man. It's something different. Maybe something more than
human. But... what's this? I see a man in a white outfit. Standing
over your prey. And he says something... it's hard to make out... But
I'm tryin' kid... He says "Z2-47, initialize factory reset.
Authorization code Zeta-5-3-Kilo"... Then he falls... And he's
Used in Hunter/Hunted
I see you surrounded by outstretched hands. Everyone needs your help,
kid. Everyone wants you to see things their way... And whether you
want it or not... You're gonna have to decide which ways of life keep
going in the Commonwealth... and which end...
Used after Hunter/Hunted, before the Sole Survivor chooses a faction to side with.
You're wearing a lab coat. You're standing with... men of science.
Visionaries. Brilliant but misunderstood. I see a land marked up, like
a great experiment. Each test a new beginning. Each sacrifice an
acceptable loss. You will not be loved, but you will save humanity.
However you choose to define it.
Refers to The Institute
You're standing with... the people. Working together. United. I see a
land filled with hope again. Fear falls away as the brave step forward
to join the ranks. You're a hero. A symbol for a better world. Our
Refers to the Commonwealth Minutemen
You're wearing a suit of steel and energy. You're standing with...
your brothers. Your mission. Accomplished. I see a land secured,
contained. Dangerous objects taken from those who don't understand.
Those who can't be trusted. You are the uniform, and you wear it well.
And your rank and chain of command protect you better than the
Refers to the Brotherhood of Steel.
You're wearing a mask. You're standing with... outcasts. The
underdogs. The lanterns in the dark. I see a world that will never
know your sacrifice. You have led the enslaved to freedom, but they
must still hide from those who don't understand. But you'll be there
for them. You'll see their humanity when no one else will. You'll be
their guardian in the shadows.
Refers to The Railroad.