At the beginning you can see only the line.

But soon after, you discover

the shape of the circle.

The change comes with the notion of cycle

which isn’t only a circle.

Because the cycle isn’t closed.

in the sense that it’s connected

with another cycle.

The end of the first can be

the beginning of the second.

To go further and beyond the cycle,

you need the more complex notion

of polycyclicity.

With this concept

you can understand

even more deeply

not only Upanishads

but also a part of the core

of Hinduism, Jainism and Buddhism.

Then it will be possible for you

to discover why there is a need

to accumulate good karma

to achieve a better cycle.