Give some thought to the way that Tennyson's poetry-type poem "The Charge of the Light Brigade" might be have intellectual content" -- i.e. contain idea in the way familiar to us in prose essays -- but with a type of effectiveness unique to its genre.
For an account of the Charge, click here.
You can actually hear Tennyson himself reading the poem here (it is somewhat unstettling, actually, hearing a voice down through the ages) from a wax-recording arranged by another historic great; Thomas Edison.
In fact, speaking of great, here is the voice of one of the truly great: the angel of the Crimean War, the "Lady of the Lamp," Florence Nightingale.