Well for one, the 13th amendment to the constitution of the US which abolished slavery - did not abolish slavery for those convicted of a crime.
“I think it's quite extraordinary that people cast me as if I'm Warren Beatty: until I met my present wife, at the age of 35, you could name two girlfriends.”
“The two operations of our understanding, intuition and deduction, on which alone we have said we must rely in the acquisition of knowledge.”