The common thing for all teachings within the Parallel Knowledge is leaning on direct experience, which is also called the Knowledge, but not on any form of belief. On everything that the followers of the teaching do not have the Knowledge (direct experience) about they will apply criteria for differentiation Knowledge from not‐knowledge (Light from the darkness and similar). In different teachings these criteria are also different, except two criteria: the safety; everything that is performed has to be safe for the performer but also for other people and the surrounding avoiding the darkness (synonym for the evil); everything that is unknown to us is known by the darkness, so we should not do what we do not know.

In certain sense, the both criteria are safety criteria, because as it is claimed the violent entrance into wisdom leads to insanity. Said in other words, the followers of the teaching do not rely on belief, do not rely on classical religious way (according to it, for example, God exists because we believe he does), but rely on completely direct experience (for example, for us only those Gods that we know really exist).

The word Knowledge is, however, very often equaled with the following meanings: learning, way, movement and the similar. It is not accidental, because according to the current internal principles, the spiritual way about which we have no direct experience does not exist for us, or more precisely: the spiritual way that does not offer us the possibility of its direct experience is unacceptable for us.

On the first sight, such attitude is exclusive towards religions and other spiritual ways. However, this knowledge is unexpectedly very tolerant. Namely, the Parallel Knowledge does not deny the existence of other spiritual ways; it shows no signs of misunderstanding and intolerance towards them. One spiritual rule that is extremely respected is: The Being should take the path that is appropriate for him at that moment. Said in other words, if someone's way is religious, or even, atheistic, followers of any way within the Parallel Knowledge are obliged to respect that. What is more, followers of the ways within the Parallel Knowledge do not consider their way more superior than the other ways, but only consider their way the best for themselves personally at that moment. It is not rare that the followers of those ways are at the same time also believers of some of the official religions (before all Christianity, Islam and Hinduism). Really, it is very difficult to find such degree of tolerance in other spiritual ways.