Before revision: Origins of the phrase The architect Louis Sullivan coined the maxim, which resumes Viollet-le-Duc's théories : "a rationally designed structure may not necessarily be beautiful but no building can be beautiful that does not have a rationally designed structure."
After revision: Origins of the phrase The architect Louis Sullivan coined the maxim, which resumes Viollet-le-Duc's theories : "a rationally designed structure may not necessarily be beautiful but no building can be beautiful that does not have a rationally designed structure."