This article proposes a Marxist interpretation of the current crisis of capital, mobilizing in particular Marx's concept of fictitious capital. It analyses the origins, manifestations, and effects of the crisis, and presents a critique of the orthodox anti-crisis policies, as well as of the recent so-called return to "Keynesianism." According to the author, there is a very high probability that the present crisis will become more acute as a systemic crisis of capital, since all the conditions are there for that to happen. This will force us to reconsider the alternatives of post-capitalist social transformation, which more and more of us, in spite of our differences, hope to be socialist. [ABSTRACT FROM AUTHOR]