At the beginning of the 20th century, even in developed countries, I suppose the general public believed in the existence of heaven.
But by the end of the 20th century, in developed countries, it seemed that people, with a few exceptions, believed that heaven does not exist.
Considering the changes that occurred during this period, it seems that advances in science and technology had a major influence.
In reality, heaven does exist.
It is just that current physics and astrophysics are not able to detect heaven.
I specialize in yoga.
In yoga, practitioners manipulate the subtle body that all human beings possess.
Although I suppose this is what is generally referred to as heaven, the lower worlds of heaven can be reached with this subtle body.
Conversely, if you understand the subtle body, you should be able to understand to some extent where heaven actually exists.
The subtle body is explained mainly in Chapters 7 and 8.
The limitations of physics and astrophysics in grasping the location of heaven are discussed in Chapter 4.
Also, I believe I was able to describe some theoretical matters regarding the location of heaven in Chapter 12, so please read it if you are interested.
