Subtraction is formation by taking away. You do not add a shape to a stick; you remove everything that isn't the shape, one one-way cut at a time, and you cannot put the wood back on. You do not build an edge onto a blade; you wear two bevels down until they have nowhere left to go but together, and then you subtract even the last burr you raised. The only honest move is removal, and it is always final.

This is the theme most set against the age's instinct to add and accumulate. What is left when the pale curls are on the floor is exactly the part you never made — the thing that was in the wood, or was not. Whittling and the whetstone are its clearest cases: honesty as the discipline of stopping when there is nothing left to take away.

See also limits and restraintattention