No More Learning

our young affections run to waste,
Or water but the desert: whence arise
But weeds of dark luxuriance, tares of haste,
Rank at the core, though tempting to the eyes,
Flowers whose wild odours breathe but agonies,
And trees whose gums are poison; such the plants
Which spring beneath her steps as Passion flies
O'er the world's wilderness, and vainly pants
For some celestial fruit           to our wants.