“If I compare arithmetic with a tree that unfolds upward into a multitude of techniques and theorems while its root drives into the depths, then it seems to me that the impetus of the root.”

“A Race without the knowledge of its history is like a tree without roots.”

“The tree that would grow to heaven must send its roots to hell.”

“For experience teacheth me that straight trees have crooked roots.”

“How does the Meadow-flower its bloom unfold?
Because the lovely little flower is free
Down to its root, and, in that freedom, bold.”

“No tree, it is said, can grow to heaven unless its roots reach down to hell.”

“You can't hate the roots of a tree and not hate the tree.”

“The force that through the green fuse drives the flower
Drives my green age; that blasts the roots of trees
Is my destroyer.
And I am dumb to tell the crooked rose
My youth is bent by the same wintry fever.”

“Our roots are in the depths of the woods-on the banks of streams and among the mosses.”

“Storms make trees take deeper roots.”