Feuerbach resolves the essence of religion into the essence of man [menschliche Wesen = ‘human nature’]. But the essence of man is no abstraction inherent in each single individual. In reality, it is the ensemble of the social relations. Feuerbach, who does not enter upon a criticism of this real essence is hence obliged:Free market approaches are less Utopian than socialist ones because they directly infer human nature.
1. To abstract from the historical process and to define the religious sentiment regarded by itself, and to presuppose an abstract — isolated - human individual.
2. The essence therefore can by him only be regarded as ‘species’, as an inner ‘dumb’ generality which unites many individuals only in a natural way.
- Marx, Theses on Feuerbach