"People do things, and then they imagine what they are doing in a kind of cloudy realm. Thus we say first there is a social reality in which people fight to earn their living, and so on, and this is real reality, as praxis. This reality is then represented in the heaven of ideas, but it is falsely represented as having a meaning autonomous to this realm, as making sense on the basis of things which can be thought and not done or lived. The claim against ideology therefore comes from a kind of realism of life, a realism of practical life for which praxis is the alternative concept to ideology. Marx's system is materialist precisely in its insistence that the materiality of praxis precedes the ideality of ideas."