Well, that with the cube line is from the P0rtal games (it's written in graffiti on one of the walls). The original verse is a poem by Emily Dickinson: "Because I could not stop for death"
"Because I could not stop for Death –
He kindly stopped for me –
The Carriage held but just Ourselves –
And Immortality.
'
We slowly drove – He knew no haste
And I had put away
My labor and my leisure too,
For His Civility –
'
We passed the School, where Children strove
At Recess – in the Ring –
We passed the Fields of Gazing Grain –
We passed the Setting Sun –
'
Or rather – He passed us –
The Dews drew quivering and chill –
For only Gossamer, my Gown –
My Tippet – only Tulle –
'
We paused before a House that seemed
A Swelling of the Ground –
The Roof was scarcely visible –
The Cornice – in the Ground –
'
Since then – 'tis Centuries – and yet
Feels shorter than the Day
I first surmised the Horses' Heads
Were toward Eternity."
He kindly stopped for me;
The cube had food and maybe ammo,
And immortality.
He kindly stopped for me –
The Carriage held but just Ourselves –
And Immortality.
'
We slowly drove – He knew no haste
And I had put away
My labor and my leisure too,
For His Civility –
'
We passed the School, where Children strove
At Recess – in the Ring –
We passed the Fields of Gazing Grain –
We passed the Setting Sun –
'
Or rather – He passed us –
The Dews drew quivering and chill –
For only Gossamer, my Gown –
My Tippet – only Tulle –
'
We paused before a House that seemed
A Swelling of the Ground –
The Roof was scarcely visible –
The Cornice – in the Ground –
'
Since then – 'tis Centuries – and yet
Feels shorter than the Day
I first surmised the Horses' Heads
Were toward Eternity."