XVI, 450: Herder makes the following statements:
1. In Leibniz’ mind were associated fruitful conceptions of all sciences and of all the realms of nature.
2. Leibniz said that one must finally, so far as conceptions of bodies are concerned, come to simple substances, which he calls “Monads.”
3. I (Herder) am convinced that among the three ingenious hypotheses with which he has enriched metaphysics the monad is the most fundamental, and will sometime win a place.
4. Without this indivisible working element, the nature of physical bodies cannot be explained.
XVI, 458: Herder calls Leibniz a “Proteus of Science,” who has done much to unify philosophical truths.
XVI, 606: Herder calls Leibniz, “our immortal Leibniz.”
XVII, 331 ff.: Herder eulogizes Leibniz, emphasizing his theories of play, his mildness and sympathy in criticizing others his youthful, impartial soul.
XVIII, 126: Herder says that Leibniz was the most modest among all the reformers of philosophical thought; he thought that all systems of the ancients could be united because each held something good.
XXI, 19: Herder quotes Leibniz as saying that language is the mirror of human understanding.