- No, political theory is not the same as religion.
- No, there are no sacred texts in Marxism. One of the key elements of Marxism is Dialectics, it's an ever-evolving theory. One of the more important works is Oppose Book Worship.
Whatever is written in a book is right — such is still the mentality of culturally backward Chinese peasants. Strangely enough, within the Communist Party there are also people who always say in a discussion, "Show me where it's written in the book." When we say that a directive of a higher organ of leadership is correct, that is not just because it comes from "a higher organ of leadership" but because its contents conform with both the objective and subjective circumstances of the struggle and meet its requirements. It is quite wrong to take a formalistic attitude and blindly carry out directives without discussing and examining them in the light of actual conditions simply because they come from a higher organ. It is the mischief done by this formalism which explains why the line and tactics of the Party do not take deeper root among the masses. To carry out a directive of a higher organ blindly, and seemingly without any disagreement, is not really to carry it out but is the most artful way of opposing or sabotaging it.
- No, Marxism does not promise "paradise on Earth," in fact it directly tackles the Utopians that tried to make such a paradise, like Robert Owen and Saint-Simon.
- No, it doesn't have "superficial pseudoscientific trappings."
- No, it has succeeded in lifting billions out of extreme poverty, ended famines common to feudal countries like nationalist China and Tsarist Russia, and more. Meanwhile, liberalism created industrialized mass-murder in the Holocaust, caused Chuchill to divert food from India to the deaths of millions, has created the conditions for mass murder, genocide of Palestinians, and so much more. The death toll of liberalism, both by ratio and in total, far surpasses Marxism and it isn't close.
You're deeply unserious.