To some People
Everything has a limit
There is a limit to Everything.
All.
Then a few People
and a few more
begin to break certain Limit.
For example
The 6 minute mile run.
or
Walking on charcoals of Fire
Staying in Water
and soon more and more Limits are broken.
That is why
there are Individuals who accept the Sky is the Limit.
Then after, even the Sky is not a Limit.
We can go beyond until the far reach of the edge of the Universe...