The Tables Turned

Up up! my friend and quit your books,
Or surely you will go double;
Up up! my friend and clear your looks,
Why all this toil and trouble?

She has the world of ready wealth,
Our minds and hearts to bless--
Spontaneous wisdom breathed by health,
Truth breathed by cheerfulness.

The sun, above the mountain's head,
A freshening luster mellow
Through all the long green fields has spread
His first sweet evening yellow.

One impulse from a vernal wood
May teach you more of man,
Moral evil and of good
Than all the sages can.

Books! 'tis a dull and endless strife
Come, hear the woodland linnet,
How sweet his music! on my life
There's more wisdom in it.

Sweet is the lore which nature brings;
Our meddling intellect
Misshapes the beauteous forms of things --
We murder to dissect.

And hark! how blithe the throstle sings!
He, too, is no mean preacher;
Come forth into the light of things,
Let nature be your teacher.

Enough of Science and of Art;
Close up those barren leaves;
Come forth, and bring with you a heart
That watches and receives.

 
--William Wordsworth
I don't get it. What's this all about?