A Contribution to the Critique of Hegel’s Philosophy of Right: Introduction

The abolition of religion as the illusory happiness of the people is the demand for their real happiness. To call on them to give up their illusions about their condition is to call on them to give up a condition that requires illusions. The criticism of religion is, therefore, in embryo, the criticism of that vale of tears of which religion is the halo.

Critique of Hegel’s Philosophy of Right

Marx and Engel’s Collected Works Volume 3: Karl Marx, March 1843-August 1844 (PDF)