Jefferson's Notes makes it clear that he shared the contemporary beliefs about the biological dangers of race mixture, the innate cultural differences, and the impression of undesirable physical characteristics. However, like William Byrd II, the enlightened planter of early eighteenth century Virginia, he believed that present environmental factors might, to some extent at least, account for the limited achievements of the Negro. Moreover, Jefferson urged caution and scientific investigation before anyone reached final conclusions on racial potentialities.
Indeed Midnight his heart may have been in the right place
and given the ignorance of the times he was ahead of his time in some of his thinking.
thanks for the link good read.