Ok john quincy adams said this but what did he mean by it? PLZ PLZ HLP!!?

“…she (America) goes not abroad, in search of monsters to destroy…She well knows that by once enlisting under other banners than her own, were they even the banners of foreign independence, she would involve herself beyond the power of extrication, in all the wars of interest and intrigue, of individual avarice, envy, and ambition, which ume the colors and usurp the standard of freedom. The fundamental maxims of her policy would insensibly change from liberty to force...”