Never as good in a second language

Here are the first lines of the poem "Kitchen Polish" by John Guzlowski:

I can't tell you about Kant
in Polish, or the Reformation,
or deconstruction

or why the Nazis moved east
before moving west,
or where I came from,

but I can count to ten, say hello
and goodbye, ask for coffee,
bread or soup.

The lines capture the difficulty of writing in a second language.  It is very difficult, if not impossible, to discuss really important things in a language other than your mother tongue.  This poem shows it, instead of just telling it.