The Washington Times has a really well-written article about George Washington's famous Farewell Speech, although it wasn't really a speech. It was a 32-page letter written by him and published for the public.
The crux of his letter is his warning of the political system. When he was the president, there were no parties. When he left after two terms, two political parties became defined, and he cautioned us of the "the alternate domination" of one party over another, thus allowing one party to hold temporary power over the government that would use it to obtain revenge on the other.
He called it.