According to materialistic science, any memory requires a material substrate, such as the neuronal network in the brain or the DNA molecules of the genes.

The experiences associated with death were seen as visits to important dimensions of reality that deserved to be experienced, studied, and carefully mapped.

It is possible to see the intermediate state between lives as being in a way more important than incarnate existence.

This sense of perfection has a built-in contradiction, one that Ram Dass once captured very succinctly by a statement he had heard from his Himalayan guru: "The world is absolutely perfect, including your own dissatisfaction with it, and everything you are trying to do to change it.

I believe that used responsibly and in a mature way, the entheogens mediate access to the numinous dimensions of existence, have a great healing and transformative potential, and represent a very important tool for spiritual development.

He suddenly understood the message of so many spiritual teachers that the only revolution that can work is the inner transformation of every human being.

We have to recognize that spirituality is a legitimate dimension in the psyche. It's a legitimate dimension in the universal scheme of things. It doesn't mean that you are superstitious, that you are in to magical, primitive thinking, if you take spirituality seriously.