Liberty is life; slavery is death. [ A. Vinet ]

A great fortune is a great slavery. [ Proverb ]

Lean liberty is better than fat slavery. [ Proverb ]

Thy talk is the sweet extract of all speech,
And holds mine ear in blissful slavery. [ Bailey ]

Serving one's own passions is the greatest slavery. [ Proverb ]

There is no endurable slavery but that of the heart.

It is the abilities of a horse that occasions his slavery. [ Proverb ]

Slavery is also as ancient as war, and war as human nature. [ Voltaire ]

There are zealots for slavery as well as zealots for freedom. [ Burleigh ]

Duty, especially out of the domain of love, is the veriest slavery in the world. [ Timothy Titcomb ]

Where there is slavery in the heart, it will soon show itself in the outward conduct. [ Seume ]

Where slavery is, there liberty cannot be; and where liberty is, there slavery cannot be. [ Abraham Lincoln ]

Freedom and slavery, the one is the name of virtue, and the other of vice and both are acts of the will. [ Epictetus ]

A man can no more justly make use of another's necessity, than he that has more strength can seize upon a weaker, master him to his obedience, and with a dagger at his throat, offer him death or slavery. [ J. Locke ]