A riddle-sonnet

Dear friend! Serene amidst the stream of words
You swim, and, blind yourself, help others see;
Transform the babbling brook and chirps of birds,
And sing the doves’ delightful song to me.
Not all you say makes sense, and now and then
You err: a Sonnet from the Portuguese
Which hides in Spanish is beyond your ken
But only you can help me cross high seas
And barriers of foreign tongues. Just so
Cosmographers with strings and superstrings
Can glimpse the secrets of the world’s great flow
In language barely understood: the things
We humans think we know are much the same,
Dear fish, as playing your blind unthinking game.

Click here for the solution to the riddle.