It has always been the preoccupation of the ignorant and simple-minded to marginalize the spiritual perspective by demanding proof for anything that seems tenuous in comparison to their "solid" perspective as if "true spirituality" was anything tenuous. But, as these investigations have pointed out, there is nothing "solid" independent of separating ourselves from our experience or reality and the introduction of time and space which as a foundation principle couldn't be less solid. Like Schopenhauer pointed out: "No object without a subject is the principle which renders all materialism forever impossibleso that it is impossible that subject and object can stand to each other in a relation of reason and consequentthe last link is the starting point, the chain a circle and the materialist is like Baron Münchausen who, when swimming in water on horseback, drew the horse into the air with his legs and himself also by his cue.