the heart must be reinvigorated from generation to generation. Conversely, whatever the strength of the structures of liberty, they may always be overrun in the end by the will of the people. Put differently, a nation’s constitution is like a covenant, and there are always at least two parties to a covenant. A nation’s constitution may therefore remain strong and clear, yet still be nullified by the citizenry failing to uphold its side of the covenant. This distinction between the structures of liberty