The country that is more developed industrially only shows, to the less developed, the image of its own future.
Karl MarxWe know that violent measures against religion are nonsense; but this is an opinion: as socialism grows, religion will disappear. Its disappearance must be done by social development, in which education must play a part.
Karl MarxThe 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.
Karl Marx