“The assumption that, beneath economics, reality is psychosexual is often rejected as ahistorical by those who accept a dialectical materialist view of history because it seems to land us back where Marx began: groping through a fog of utopian hypotheses, philosophical systems that might be right, that might be wrong (there is no way to tell); systems that explain concrete historical developments by a priori categories of thought; historical materialism, however, attempted to explain 'knowing' by 'being' and not vice versa.”

Source: Liber Null & Psychonaut (1987), p. 151
Context: Physical processes alone will never completely explain the existence of the universe, life, and consciousness. Religious answers are just wishful thinking and wanton fabrication cast over a bottomless pit of ignorance. To explain their occult and mystical experiences, magicians are forced to develop models beyond the scope of materialistic or religious systems.

January 1941. Quoted in "The China Monthly Review" - Page 47 - East Asia - 1917

Introduction to Capital. Introduction to volume 1 (1976)

The Marxian approach to system theorizing clearly points us to sociologically important phenomena: the material conditions of social life, stratification and social class, conflict, the reproduction as well as transformation of capitalist systems, the conditions that affect group mobilization and political power, and the ways ideas functions as ideologies.
Source: Systems theories (2006), p. 2.

Collected Works, Vol. 33, pp. 227–36.
Collected Works

Reported in Jay Babcock, " MUSIC IS NEVER WRONG: A visit with Josh Homme & John Paul Jones of Them Crooked Vultures http://www.arthurmag.com/2009/10/15/them-crooked-vultures/", Arthur Magazine (October 15, 2009).

Vincent Ostrom. 1997. The Meaning of Democracy and the Vulnerability of Democracies: A Response to Tocqueville's Challenge. University of Michigan Press. p. 179
Context: I cannot claim to have had any direct personal divine inspiration. Yet coping with multitudinous problem-solving efforts and observing the world in which I live evokes an openness to a mystery of being that I cannot deny. Critical reflection leads me to believe than an awareness of such mysteries is a necessity in the constitution of order in democratic societies. If religion is a necessity in the conceptualization of paradigmatically diverse formulations, religion might be viewed as a necessary element in a system of knowledge pertaining to the consitution of order. We do, however, face the problem of those system of order that were constituted under circumstances of explicitly rejecting religion as a necessary feature in their constitution. We have the potential, then, of those who reject religion becoming the prophets of new secular religions. What we call "ideologies" may be the source of that most profound pathologies in human personal and social disorders.

Source: Systems theories (2006), p. 2.

As quoted in "The Holocaust and Armenian Case: Highlighting the Main Differences" by Ibrahim Kaya http://www.turkishweekly.net/articles.php?id=61, in Turkish Weekly (10 April 2001)