Avengers: Infinity War2018

Stonekeeper:
Welcome, Thanos, son of A'lars, Gamora, daughter of Thanos.

Thanos:
You know us?

Stonekeeper:
It is my curse to know all who journey here.

Thanos:
Where is the Soul Stone?

Stonekeeper:
You should know: It extracts a terrible price.

Thanos:
I am prepared.

Stonekeeper:
We all think that at first. [his face is revealed as the Red Skull] We are all wrong.

Thanos:
How is it you know this place so well?

Red Skull:
A lifetime ago, I, too, sought the stones. I even held one in my hand. But it cast me out, banished me here. Guiding others to a treasure I cannot possess.

[Red Skull leads Thanos and Gamora to the edge of a tall cliff]

Red Skull:
What you seek lies in front of you. As does what you fear.

Gamora:
What's this?

Red Skull:
The price. Soul holds a special place among the Infinity Stones. You might say it has a certain wisdom.

Thanos:
Tell me what it needs.

Red Skull:
To ensure whoever possesses it understands its power, the stone demands a sacrifice.

Thanos:
Of what?

Red Skull:
In order to take the stone, you must lose that which you love. A soul... for a soul.

Gamora:
[laughs] All my life I dreamed of a day, a moment, when you got what you deserved. And I was always so disappointed. But now, you kill, and torture and you call it mercy. The universe has judged you. You asked it for a prize and it told you "No". You failed. And do you wanna know why? Because you love nothing. No one.

Thanos:
[sheds a tear] No.

Gamora:
Really? Tears?

Red Skull:
They are not for him.

[Gamora looks at the Red Skull, and as her bitter smile fades, realizes what is about to happen]

Gamora:
No. This isn't love.

Thanos:
I ignored my destiny once. I cannot do that again. Even for you.

[Gamora takes the double-edged knife Thanos had given her, then tries to stab herself in the stomach. But Thanos uses the Reality Stone, turning the knife into bubbles]

Thanos:
[anguished] I'm sorry, Gamora.

Gamora:
[muted] NO!