Thomas Jefferson (1801-1809) 5

I believe that Jefferson would have ended slavery had that been a viable option at the time. He warned repeatedly that future generations would bleed because of the institution. He made some bad decisions regarding trade and economic policy, but overall a great President. On a side note- I find him perhaps the most interesting of all the Presidents. He was such a genius that I believe he sort of lived in his own world, operating on a different plane. Probably the only "Mozart" to ever serve as Pres.