Is the following line from one of Shakespeare's works? Quote: The moving finger writes; and, having writ, moves on: nor all thy piety nor wit...

Although most quotes that you can think of tend to come
from Shakespeare or the Bible, it turns out that this line is not from any Shakespeare
work at all.  You can use any of a number of Shakespeare sites where you can search all
of his works and that line is not found.

Where this line
actually does come from is the Rubaiyat, written by the poet Omar Khayyam.  Omar Khayyam
was a poet from what is now Iran but was then called Persia.  Besides being a poet, he
was a mathematician and scientist.  The line you cite comes from Poem #545 in the
Rubaiyat.