Chapter 25 Finite and Infinite

The finite is a concept that there are boundaries (wall).
The infinite is substance that there is no boundary (wall).
We mistake the boundary (wall) for substance.
Substance is not the boundary (wall) but empty space.
Here is a reason why the universe is called espacef, empty space is also called espacef and a cubic is called espacef, too.
Our espacef 13.7 billions light-years expanse is just a concept without any meaning and merely an image.
Our galaxy espacef 100 thousand light-years expanse is just a concept without any meaning and merely an image.
Our solar system 80 astronomical-units (AU) expanse is just a concept without any meaning and merely an image.
Our sun and earth system one astronomical-unit (AU) expanse is just a concept without any meaning and merely an image.
Our earth and moon system 380 thousand kilometers expanse is just a concept without any meaning and merely an image.
Our earth 12,756 kilometers expanse is just a concept without any meaning and merely an image.
Our Japan 380 thousand kilometers square expanse is just a concept without any meaning and merely an image.
Our Osaka Prefecture 1,893 kilometers square expanse is just a concept without any meaning and merely an image.
Satoshi Nitta 184 centimeters height expanse is just a concept without any meaning and merely an image.
Elementary particles 1m of 18th power reduction of 10 is just a concept without any meaning and merely an image.
The expansion of the digit of the 44th power of 10 which is from macro espacef 13.7 billions light-year s(1m of 26th power of 10) to micro espacef (1m of 18 power reduction of 10) is just a concept without any meaning and merely an image.
These figures show only the sizes of the boundaries (wall) not espacef.
Space 13.7 billions light-years, space 184 centimeters height and space (1m of 18th power reduction of 10) are merely empty space.
Empty space is nothing but substance.
Space 13.7 billions light-years, space 184 centimeters height and space (1m of 18th power reduction of 10) are just concepts and images.

Remark: We call the distance from the sun to the earth one astronomical-unit (1AU)
1AU (astronomical unit) =150,000,000 km.