The infinite imagination knows no limits.
The world, as an extension and use of space, does.
When the Zen painter stands in front of his empty canvas, the whole universe and beyond is open to him. Anything can be painted, anything can be created, and so he does.
As he moves his brush spontaneously to the rhythm of his powerful strokes, the paint immediately excludes other uses of that space by different strokes or no strokes at all.
But without limits, nothing can be created, so he smiles, and moves on without pause or hesitation.
As he continues to paint on his canvas and on his life, limits are what draws him to completion.
To be successful, therefore, in painting and in life, you need the power of limits to work for you.