The author has the objective of developing a parallel between the thought of Augustine and that of Rosmini, within their common «platonic» origin. Attention is particularly drawn to a series of texts by the two authors concerning the communication of Truth by God as a communication of Love. The structure of the article delineates this comparison: a section on Augustine follows that of Rosmini; in the latter case, a further section is devoted to the political and legal thought of Rosmini, emerging specifically through works such as Philosophy of Law and Philosophy of Politics.