Some lines from the book "Ideas and Opnions" by Albert Einstein

[Rishabh Narula]

I read these lines from the book Ideas and
Opinions by Albert Einstein-
"Gradually the conviction gained recognition
that all knowledge about things is exclusively
a working-over of the raw material furnished by
the senses."

what I interpret from is that knowledge is
obtained by observing physical things(things
that can be observed by the senses) and thinking about it,
forming opinions,reasoning about it.Improving
on it basically.
Is my interpretation right?
what exactly does working-over mean here?
I know that working on something means-
to spend time repairing or improving something
for eg. His dancing technique is good,
but he needs to work on his fitness.
Does working-over here has similar meaning?

Also I do think,currently,that there are
observations justifying concepts too.
like the concept of negative numbers
can be related to being in debt.
Is it right to think so?If not,please give
some examples.

 

[nuuskur]

Is this a complete thought or did he also give some context? My English is not as good as I thought or I am simply off the required wavelength.

 

[Rishabh Narula]

Is this a complete thought or did he also give some context? My English is not as good as I thought or I am simply off the required wavelength.

Mostly what I interpreted,few lines are from the book before I go on too my own interpretation of it.after what i interpret.

 

[DaveE]

OK, my translation: insentient beings lack knowledge.
I guess I don't see why this is profound, it seems obvious to me.