Here's his first sentence:
Four score and seven years ago our fathers brought forth on this continent, a new nation, conceived in Liberty, and dedicated to the proposition that all men are created equal.
Where is the "lie" -- much less the "bald face lie" -- in that sentence?
Right here:
"dedicated to the proposition that all men are created equal."
The newly formed government was clearly not dedicated to this principle. The 13 slave owning states were making no statement on the institution of slavery, and all were reading that verbiage as applying only to white English subjects. There was absolutely no intent to apply this idea to slaves, yet Lincoln is citing it as if that was the only thing our new government was created to accomplish.
Either the man is a moron, or a liar, and if you've read his writings you can clearly see he was no moron, so the only possibility remaining is that he was deliberately trying to deceive people as to the intent of our founders in creating the USA out of 13 slave holding states.
Did that clear it up for you?