An architect’s most useful tools are an eraser at the drafting board, and a wrecking bar at the site.

The remark underscores Wright’s belief that architecture is as much an act of disciplined subtraction as of invention. The eraser symbolizes rigorous self-critique during design—removing weak ideas, clarifying structure, and refining proportion before anything is built. The wrecking bar extends that ethic into construction: if a detail, material choice, or on-site decision compromises the integrity of the work, the architect must be willing to undo it rather than rationalize it. Read this way, the quote champions courage and accountability—prioritizing coherence and quality over convenience, sunk costs, or deference to contractors and schedules.