How to experience heaven (nirvana) and hell (samsara) for oneself, in order to understand the meaning of liberation. Read the lecture transcription. Lecture quote: Heaven, hell and liberation are three fundamental terms that are used often in most every religion. In Gnosis, we use these words differently then you might have encountered in the past. When we begin to study Gnosis, we carry with us the assumptions and definitions that we acquired previously. When we begin to study Gnosis and try to comprehend what Gnosis is, we have to go through a process of conceptual revision. This is related with the third state of consciousness, and is a process through which we review, revise, or renew the concepts in our psyche. Without this essential review, our understanding of the path can remain mistaken about fundamental aspects. So, to understand what heaven, hell, and liberation really are, we have to review our concepts of them, and test them, to make sure that the way we understand them refers to facts, based in experiential reality, something that we ourselves have tasted or know, not just a belief, not just something that we have as a theory, or an idea, but something we have experienced. This is the starting point of Gnosis. The word Gnosis refers to knowledge that we have derived from our own experience. And so, we need to analyze the concepts we have in our psyche about heaven, hell, and liberation, and test those concepts.