The Quincy Adams speech Americans should read is the July 4th 1821 oration, ending with...
“ America goes not abroad in search of monsters to destroy...”
https://www.google.com/books/edition/Niles_Weekly_Register/uK23nu1tp54C?hl=en&gbpv=1&pg=PA326
Here is that oration. It caused quite a stir at the time.