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Poggio Bracciolini, an Italian humanist, rediscovered De architectura, a treatise on architecture by the Roman architect Vitruvius, in 1414. This rediscovery had a profound impact on Renaissance architecture, as it provided architects with a valuable source of knowledge about classical architectural principles and techniques. De architectura became a widely studied and influential text, shaping the development of Renaissance architecture and its emphasis on symmetry, proportion, and classical forms.