This article seeks to contribute to the analysis of the philosophical excursus of Plato’s Seventh Letter and, in particular, to the conditions and assumptions that the author of the Letter considers necessary for the attainment of intellectual knowledge; knowledge, which is metaphorically presented with the famous image of the spark (ἐξαφθέν φῶς), like a sudden light springing forth from within the soul and feeding upon itself. Some introductory questions are examined in the first part of the study, while the problem of the conditions of intellectual knowledge is addressed in the second part. The article concludes by exploring the question of the objective dimension of knowledge: what does Plato propose in the Seventh Letter?