No querí a componer otro quijote -- lo cual es fá cil -- sino el Quijote. Pierre Menard did not want to compose anotherQuixote, which surely is easy enough -- he wanted to compose theQuixote. Su admirable ambición era producir unas páginas que coincidieran -- palabra por palabra y línea por línea -- con las de Miguel de Cervantes. His admirable ambition was to produce a number of pages which coincided -- word for word and line for line -- with those of Miguel de Cervantes.

(start here) Once upon a time there was a system twice