It's a quote from a poem by William Congreve, 1697. I have no idea who he is, but that's the best translation I found for the french proverb la musique adoucit les mœurs. And it's quite beautiful in itself.
Listen to this beauty me mateys:
Mark Knopfler & James Taylor - Sailing to Philadelphia
I am Jeremiah Dixon
I am a Geordie boy
A glass of wine with you, sir
And the ladies I'll enjoy
All Durham and Northumberland
Is measured up by my own hand
It was my fate from birth
To make my mark upon the earth
He calls me Charlie Mason
A stargazer am I
It seems that I was born
To chart the evening sky
They'd cut me out for baking bread
But I had other dreams instead
This baker's boy from the west country
Would join the Royal Society
We are sailing to Philadelphia
A world away from the coaly Tyne
Sailing to Philadelphia
To draw the line
A Mason-Dixon Line
Now you're a good surveyor, Dixon
But I swear you'll make me mad
The West will kill us both
You gullible Geordie lad
You talk of liberty
How can America be free
A Geordie and a baker's boy
In the forests of the Iroquois
Now hold your head up, Mason
See America lies there
The morning tide has raised
The capes of Delaware
Come up and feel the sun
A new morning has begun
Another day will make it clear
Why your stars should guide us here
We are sailing to Philadelphia
A world away from the coaly Tyne
Sailing to Philadelphia
To draw the line
A Mason-Dixon Line
Would you mind sharing songs that give you a sense of peace in your soul?
A stargazer am I
