» What will stick to them like burrs....

From Robert Frost's “The Figure a Poem Makes”:

Scholars and artists thrown together are often annoyed at the puzzle of where they differ. Both work from knowledge; but I suspect they differ most importantly in the way their knowledge is come by. Scholars get theirs with conscientious thoroughness along projected lines of logic; poets theirs cavalierly and as it happens in and out of books. They stick to nothing deliberately, but let what will stick to them like burrs where they walk in the fields. No acquirement is on assignment, or even self-assignment. Knowledge of the second kind is much more available in the wild free ways of wit and art. A school boy maybe defined as one who can tell you what he knows in the order in which he learned it. The artist must value himself as he snatches a thing from some previous order in time and space into a new order with not so much as a ligature clinging to it of the old place where it was organic.