Here is a Persian poem, written by Hafiz, and translated by Ralph Waldo Emerson. Clearly it is best to read poetry in its original language, but I don't believe that we should fail to read poetry originally written in other languages if translation is our only recourse. Even if one can't get the complete sense of the poem, because of the missing connotations and the emotional heft of the cultural references, we can still find our way to the common area of humanity that underlies all art and all poetry.
I said to heaven that glowed above,
O hide yon sun-filled zone,
Hide all the stars you boast;
For, in the world of love
And estimation true,
The heaped-up harvest of the moon
Is worth one barley-corn at most,
The Pleiads' sheaf but two.
If my darling should depart,
And search the skies for prouder friends,
God forbid my angry heart
In other love should seek amends.
When the blue horizon's hoop
Me a little pinches here,
Instant to my grave I stoop,
And go find thee in the sphere.