I have never been able to conceive how any rational being could propose happiness to himself from the exercise of power over others. Thomas Jefferson

• freedom
• slavery

Those who deny freedom to others deserve it not for themselves, and, under a just God, cannot long retain it. Abraham Lincoln

• freedom
• slavery

Indeed I tremble for my country when I reflect that God is just: that his justice cannot sleep for ever: that considering numbers, nature and natural means only, a revolution of the wheel of fortune, and exchange of situation, is among possible events: that it may become probable by supernatural interference! Thomas Jefferson

• justice
• slavery

This is the context.

Perhaps I am not a good judge of these things, but in my opinion the religion that makes men rebel and fight against a just government in defense of an unjust institution that makes slaves of men whom God made free is not the genuine article. The religion that reconciles men to the idea of eating their bread in the sweat of other men's faces is not the kind to get to heaven on. Abraham Lincoln

• slavery

If slavery is not wrong, nothing is wrong. Abraham Lincoln

• slavery

Few men desire liberty; most men wish only for a just master. Gaius Crispus

• freedom
• liberty
• slavery

Necessity is the plea for every infringement of human freedom. It is the argument of tyrants; it is the creed of slaves. William Pitt

• freedom
• liberty
• slavery

The danger of the past was that men became slaves. The danger of the future is that man may become robots. Erich Fromm

• slavery