Some quotes that people might not expect, given their originators and the political views and groupings of the present day:

Under no pretext should arms and ammunition be surrendered; any attempt to disarm the workers must be frustrated, by force if necessary.

— Karl Marx, Address of the Central Committee to the Communist League in London, March 1850

It is not very unreasonable that the rich should contribute to the public expense, not only in proportion to their revenue, but something more than in that proportion.

— Adam Smith, Chapter II, Book V, The Wealth of Nations

I am not, nor ever have been, in favor of bringing about in any way the social and political equality of the white and black races—that I am not nor ever have been in favor of making voters or jurors of negroes, nor of qualifying them to hold office, nor to intermingling with white people; and I will say in addition to this that there is a physical difference between the white and black races which will ever forbid the two races living together on terms of social and political equality. And inasmuch as they cannot so live, while they do remain together, there must be the position of superior. I am as much as any other man in favor of having the superior position assigned to the white race.

— Abraham Lincoln, Lincoln-Douglas debates, October 13, 1858