Petrarch, "Io son sí stanco sotto 'l fascio antico"

A work ("So weary from that burden old") by this Italian man of letters.  You can read the original here.

So weary from that burden old,
Of sin and custom's ruthless sway,   
I fear to trip upon my way,
And fall afoul of my worst foe. 

Yet one great Friend delivered me,
With marvelous and peerless grace;
Then so flew past my eyes' embrace,
That watching Him was vain it seemed. 

Anew His voice in distant hum: 
"O you who work, the path is here;
If none bars passage, to me come."

What destiny, what grace, what love?
Shall let me rest, with wings of dove,
And let me rise from this poor sphere?