Lincoln pretty much guaranteed the speech would be a hit with his final line. It sounds like something Aragorn said in The Lord of the Rings, if The Lord of the Rings had way more bureaucratic language.

People must have been cheering and fist-pumping at this line:

[…] that we here highly resolve that these dead shall not have died in vain, that this nation under God shall have a new birth of freedom, and that government of the people, by the people, for the people shall not perish from the earth. (10)

But these lines also warned of the price of failure. Giving in to Confederate demands would be a betrayal of the values on which the country was founded. The very idea of a government for the people was at stake.

Now get out there and win, boys.