Abstract The article proposes to re-examine the Lucretian formula naturae species ratioque (1.146–148 = 2.59–61 = 3.91–93 = 6.39–41), the meaning of which has prompted some critical debate. The examination begins from an analysis of rhetoric and argument in the sections in which the phrase occurs, with the goal of demonstrating that the meaning ‘rational vision of nature’ is more apt to the context and to Lucretius’ poetic and philosophical programme, which often relies on metaphors drawn from the semantic field of vision to describe the comprehension of natural phenomena and the didactic aim of the work. In the light of this, the final part of the paper discusses the textual problem concerning lines 6.56–57 (= 90–91), which are normally considered spurious but which can be understood better in the light of the Lucretian conception of philosophy (and of poetry) as penetrating vision.

中文翻译：

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Alcune osservazioni su naturae species ratioque nel De rerum natura di Lucrezio（以及对 testo 的说明）

摘要 本文提议重新审视 Lucretian 公式自然物种比率 (1.146–148 = 2.59–61 = 3.91–93 = 6.39–41)，其含义引发了一些批判性辩论。考试从对该短语出现的部分中的修辞和论证进行分析，目的是证明“自然的理性愿景”的含义更适合上下文和卢克莱修的诗意和哲学计划，这通常是依靠从语义视野中提取的隐喻来描述对自然现象的理解和作品的教学目标。有鉴于此，论文的最后一部分讨论了有关第 6.56-57 行（= 90-91）的文本问题，