“Prejudices are so to speak the mechanical instincts of men: through their prejudices they do without any effort many things they would find too difficult to think through to the point of resolving to do them.”

Il ne s'est jamais rien fait de grand dans le monde que par le courage et la fermeté d'un seul homme qui brave les préjugés de la multitude.
[in Gracchus Babeuf avec les Egaux, Jean-Marc Shiappa, Les éditions ouvrières, 1991, 43, 27082 2892-7]
On prejudices

Source: Women

Quoted in "One Man Takes Aim At Prejudice With Storybook" at The Washington Post (20 January 2008) http://www.washingtonpost.com/wp-dyn/content/article/2008/01/19/AR2008011902412.html.

John Plunkett Tarbuck set for C4 return, MediaGuardian, Monday 11 November 2002 http://www.guardian.co.uk/media/2002/nov/11/broadcasting.channel41

Il se flattait d'être sans préjugés, et cette prétention était à elle seule un gros préjugé.
Pt. II, ch. 4
The Crime of Sylvestre Bonnard (1881)

Television interview ("On clarity and exact thinking" - available on youtube)
1960s

Alan Moore on Anarchism (2009)
Context: I suppose I first got involved in radical politics as a matter of course, during the late 1960s when it was a part of the culture. The counterculture, as we called it then, was very eclectic and all-embracing. It included fashions of dress, styles of music, philosophical positions, and, inevitably, political positions. And although there would be various political leanings coming to the fore from time to time, I suppose that the overall consensus political standpoint was probably an anarchist one. Although probably back in those days, when I was a very young teenager, I didn’t necessarily put it into those terms. I was probably not familiar enough with the concepts of anarchy to actually label myself as such. It was later, as I went into my twenties and started to think about things more seriously that I came to a conclusion that basically the only political standpoint that I could possibly adhere to would be an anarchist one.
It furthermore occurred to me that, basically, anarchy is in fact the only political position that is actually possible. I believe that all other political states are in fact variations or outgrowths of a basic state of anarchy; after all, when you mention the idea of anarchy to most people they will tell you what a bad idea it is because the biggest gang would just take over. Which is pretty much how I see contemporary society. We live in a badly developed anarchist situation in which the biggest gang has taken over and have declared that it is not an anarchist situation – that it is a capitalist or a communist situation. But I tend to think that anarchy is the most natural form of politics for a human being to actually practice. All it means, the word, is no leaders. An-archon. No leaders.
And I think that if we actually look at nature without prejudice, we find that this is the state of affairs that usually pertains.

No. 1.
Seventy Resolutions (1722-1723)