Edith Nesbit - The Tree Of Knowledge

I PLUCKED the blossoms of delight
In many a wood and many a field,
I made a garland fair and bright
As any gardens yield.

But when I sought the living tree
To make new earth and Heaven new,
I found--alas for you and me--
Its roots were set in you.

Oh, dear my garden, where the fruit
Of lovely knowledge sweetly springs,
How jealously you guard the root
Of all enlightening things!

Edith Nesbit

http://www.poemhunter.com/poem/the-tree-of-knowledge-2/