“We are neither a racial nor a national entity in the conventional meaning of this term; we have become a nation only on the strength of an ideology, a common belief in a particular way of life: and that ideology, that way of life is expressed in one single word: Islam.”

On the Social State of Marxism (1978)

2000s, Speech at the Four Seasons, New York (25 September 2008)

Source: Permaculture: A Designers' Manual (1988), chapter 14.2

Myśli nowoczesnego Polaka, 7th ed., 1953, p. 14.

Ideology and Utopia (1929)
Context: In general there are two distinct and separable meanings of the term "ideology" — the particular and the total.
The particular conception of ideology is implied when the term denotes that we are sceptical of the ideas and representations advanced by our opponent. They are regarded as more or less conscious disguises of the real nature of a situation, the true recognition of which would not be in accord with his interests. These distortions range all the way from conscious lies to half-conscious and unwitting disguises; from calculated attempts to dupe others to self-deception. This conception of ideology, which has only gradually become differentiated from the common-sense notion of the lie is particular in several senses. Its particularity becomes evident when it is contrasted with the more inclusive total conception of ideology. Here we refer to the ideology of an age or of a concrete historico-social group, e. g. of a class, when we are concerned with the characteristics and composition of the total structure of the mind of this epoch or of this group. Although they have something in common, there are also significant differences between them.

"Geert Wilders: I Won’t Stop Warning the West About Islam" by Matthew Vadum, FrontPage Magazine (5 May 2015) http://www.frontpagemag.com/2015/matthew-vadum/geert-wilders-i-wont-stop-warning-the-west-about-islam/
2010s

Source: The social system (1951), p. 349

Oscar Iden Lecture Series, Lecture 3: "The State of Individuals" (1976)