Joseph Dietzgen

[T]he heart is a very unreliable coinpass, and even will and knowledge, as all ideological factors in general, are not to be trusted as guides if they are without any material basis_. [I]t is not love nor help which is the guiding rule of our time, but hammer or anvil. In reality it is thus: who does not want to be a servant must try to become a master. Under such conditions it is idle to hope that people will sacrifice realities for ideal precepts. We are not sentimental enough to expect such things. Though we use moral arguments in our struggle against the bourgeois, we do all we can to stimulate our class consciousness.