Catullus. Catullus: The Complete Poems for American Readers. Trans. Reney Myers and Robert J. Ormsby. New York: E. P. Dutton, 1970.
The purpose of this post is to clarify a persistent misattribution. The Assassination of Jesse James by the Coward Robert Ford does contain a quotation from Shakespeare; however, it also contains a quotation from Catullus.
At one point in the film, one of the bandits quotes from Poem LXX by Catullus:
The Latin for this poem reads as follows:My love says she would marry only me,
And Jove himself could never make her care.
What women say to lovers, you'll agree,
One writes on running water or on air.
A bit later in the film, another bandit quotes from Sonnet 62 (though you can only just make out the words):Nulli se dicit mulier mea nubere malle
quam mihi, non si se Iuppiter ipse petat.
dicit: sed mulier cupido quod dicit amanti,
in uento et rapida scribere oportet aqua.
Here's a clip that contains both quotations:Sin of self-love possesseth all mine eye
And all my soul and all my every part;
And for this sin there is no remedy,
It is so grounded inward in my heart.
Again, the main point is to give due credit where it is due. Shakespeare wrote "And for this sin there is no remedy, / It is so grounded inward in my heart"; Catullus wrote "What women say to lovers, you'll agree, / One writes on running water or on air." Thank you for the clarification.
Links: The Film at IMDB.