Part 2: "But, in a larger sense, we can not dedicate -- we can not consecrate -- we can not hallow -- this ground. The brave men, living and dead, who struggled here, have consecrated it, far above our poor power to add or detract. The world will little note, nor long remember what we say here, but it can never forget what they did here."
-->This is sacred ground because of the sacrifices of the men who died here, fighting for the principle of equality. It is what they did that makes it sacred, not the ceremony we are holding now. What we are doing here today isn't important.
"It is for us the living, rather, to be dedicated here to the unfinished work which they who fought here have thus far so nobly advanced. It is rather for us to be here dedicated to the great task remaining before us -- that from these honored dead we take increased devotion to that cause for which they gave the last full measure of devotion -- 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..."
-->Here's what's important: finishing the work they began. That is, we must win the war for the Union, and give the nation a fresh start, a rebirth as a democracy in which all people, _including former slaves_, are politically equal. If we don't win, their lives will have been wasted. We can honor them best by winning the war, not by burying them in a nice cemetery.
" -- and that government of the people, by the people, for the people, shall not perish from the earth."
-->...and if we don't win now, it is the end of democracy itself. (Because we're the only nation ever to be founded as a democracy, and if we don't win, the nation will no longer be democracy that was "conceived in liberty" in 1776).