There is no mundane dimension really, if you have the eyes to see it, it is all transcendental.
Terence McKennaPsychedelic experiences are beyond the reach of cultural manipulation, and discovering this and exploring it is somehow the frontier of maturity. Culture is a form of enforced infantilism. It's the last nursery, and most people never leave it.
Terence McKennaWhere psychedelics comes together with that is that it's going to require a transformation of human language and understanding to stop the momentum of the historical process, to halt nuclear proliferation, germ warfare, infantile 19th century politics, all these things. It cannot be accomplished through a frontal assault upon it by political means.
Terence McKenna