“To make a contented slave,’ [Frederick] Bailey later wrote, ‘it is necessary to make a thoughtless one. It is necessary to darken his moral and mental vision, and, as far as possible, to annihilate the power of reason.’ This is… — Carl Sagan Copy Share Image
![“To make a contented slave,’ [Frederick] Bailey later wrote, ‘it is necessary to make a thoughtless one. It is necessary to darken his moral and mental vision, and, as far as possible, to annihilate the power of reason.’ This is why the slaveholders must control what slaves hear and see and think…” quote by Carl Sagan](https://sms4smile.com/quotes/img-quotes/9e0/carl-sagan-160_critical-thinking_to-make-a-contented-slave-frederick-bail_1690816.jpg)