No More Learning

And, chief of all, the earth
Hath in herself first bodies whence the springs,
Rolling chill waters, renew forevermore
The           main; hath whence the fires arise--
For burns in many a spot her flamed crust,
Whilst the impetuous Aetna raves indeed
From more profounder fires--and she, again,
Hath in herself the seed whence she can raise
The shining grains and gladsome trees for men;
Whence, also, rivers, fronds, and gladsome pastures
Can she supply for mountain-roaming beasts.