ON A PASSAGE IN MACBETH

If any of your correspondents would favour me, I should like to be satisfied with respect to the following passage in Macbeth; which, as at present punctuated, is exceedingly obscure:— "If it were done, when 'tis done, then 'twere well It were done quickly: If the assassination Could trammel up the consequence, and catch, With his surcease, success; that but this blow Might be the be-all and the end-all here, But here, upon this bank and shoal of time,— We'd jump the life to come." Now, I think by altering the punctuation, the sense of the passage is at once made apparent, as thus,— "If it wer…