Abe Lincoln, hmm, not sure why you brought his name up, as he was considered very smart by many. Do you have any documentation to back up your claim?
I fould one site that estimates his IQ at 128, which is well above the retarded stage IIRC.
Famous People IQ
Here's another that suggests Age was "mentally gifted" and had an IQ as high as 150.
Abraham Lincoln - A Gifted Man
While you're digging that up let's look at some of hte stuff he was NOT remembered for, shall we? Kinda makes ya think, many folks would have given up after so many failures and bad luck but he stuck with it.
1832 Lost job
Defeated for state legislature
1833 Failed in business
1835 Girlfriend died of typhoid fever at age 22
1836 Had nervous breakdown
1838 Defeated for Speaker
1843 Defeated for nomination for Congress
1848 Lost renomination (Chose not to run for Congress, abiding by rule of rotation among Whigs.)
1849 Rejected for land officer
Declined appointment as secretary and then as governor of Oregon Territory
1850 Oldest son dies
1854 Defeated for U.S. Senate Elected to Illinois state legislature (but declined seat to run for U.S. Senate)
1856 Defeated for nomination for Vice President
1858 Again defeated for U.S. Senate
1862 second son dies
1871 fourth son dies