How about:
"Experience hath shewn, that even under the best forms of government those entrusted with power have, in time, and by slow operations, perverted it into tyranny."
- Thomas Jefferson
or
"I've advocated a proportional tax system. You make $10 billion, you pay a billion. You make $10, you pay one. And everybody gets treated the same way."
- Ben Carson
or
"The most terrifying words in the English language are: I'm from the government and I'm here to help."
- Ronald Reagan
or
"It is not from the benevolence of the butcher, the brewer, or the baker that we expect our dinner, but from their regard to their own interest."
- Adam Smith
or
"The real tragedy of the poor is the poverty of their aspirations."
- Adam Smith