This is an interesting question! Certainly, arguments could be made for either side—that Friar Lawrence was wise to marry Romeo and Juliet or that he was unwise to do so. Shakespeare utilizes dramatic irony to make the reader privy to a lot of information that Friar Lawrence did not have, such as the Paris's desire to marry Juliet.
I believe that Friar Lawrence thought his decision was wise, but in my opinion, it was extremely unwise for several reasons.
The tragedy of Romeo and Juliet is set in the Elizabethan era, and there were specific customs regarding marriages in this period in history. Arranged marriages were very common, especially among wealthy families and members of the nobility. Land and titles were at stake, and marriages were important from a business standpoint for those reasons. One custom regarding marriage was called "Crying the Banns," which required marriages to be announced in a church three times before the marriage took place, to give time for any objections to be raised or...
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