plz explain this sentence to me. Thanks!!

"It is strange how words shape our thoughts and trap us at the bottom
of deeply incised canyons of thinking, their imprisoning sides carved
out
by the river of past usge."


What does the sentence mean?
In my thinking, the sentence is " how words shape our thoughts and
trap us at the bottom of deeply incised canyons of thinking is
strange; their imprisoning sides carved out by the river of past usge"
is it correct?

I feel the sentence is too complex, would any one out there plz
explain it to me?

Thank you so much