In this research I propose to bring to light the meaning of "Venus" in the invocation of Lucretius´s De rerum natura. This paper is divided into six parts. In the first, I give an account of the various interpretations of the invocation and I systematize them. In the second I analyze and discuss three incategorizable investigations. In the third and fourth parts I expose the epicurean concepts of pleasure and divinity respectively. In the fifth I look for the terms, by (...) way of epithets, that the poet uses to refer to the goddess, bringing to light the nuances that light up them alternately in various instances of the invocation. In the sixth, finally, I give mine interpretation of vv 44-49 explaining why they should be included in the invocation. (shrink)