XXIII, 479: Herder says, Leibniz, had he lived to see his original plans revived in the Scientific Society in Berlin, probably would have arranged a _System der Völker nach Sprachen und Bildungen_. This method of studying history by going to natural environments and to the sources is sufficiently in accord with Herder’s ideas to call forth the prophecy that what the past century had omitted in this respect the future would do. XXIII, 483: Herder, referring to Leibniz’ system of _Monaden, prästabilirten Harmonie u. f._, says that no one doubts that there is much that is true and beautiful in it; no one dares deny a world of souls and a harmony between mind and body; there is no doubt that there are pure conceptions in which thoughts are considered only as workings or developments of the soul, and, on the other hand, the laws of the world of bodies are considered as mechanical and artificial. XXIV, 267: Herder notes Leibniz’ romantic attitude, observing that Leibniz regretted the decline in the feeling of courage and honor and that he counseled a return to the deeds and voices and models of the past to reawaken these. XXV, 88: Herder says if Leibniz found human wit and humor most real and effective in play, certainly he (Herder) is justified, in finding the most faithful reproductions of traditions, language, and customs at the point where truth and delight meet; i.e., in song. XXX, 135: Herder calls Leibniz the greatest man that Germany has had. XXX, 258: Herder has remarked frequently upon Leibniz’ theory that the human mind is never more clear-sighted and disposed to activity than in play. He analyzes the thought here, and it is worth considering because it hinges closely upon Herder’s philosophy which causes him to seek genuine _Volk_ character in methods of expression which are natural rather than artificial. He asks, Why is it that there is this connection between our innermost selves and pleasure and joy? Many forms of play are so difficult and fatiguing, others are subject to such strict rules; just because they demand this is the form of play interesting for those who like it. It becomes pleasant because it keeps both soul and body constantly and interchangeably busied. In the progress of being occupied lies an indefinable pleasure; we feel the happy progressiveness by which our forces are strengthened and grow. The more frequently this interchange takes place, the more do we realize our forces enriched. XXIII, 154: Herder says Shaftesbury sent to Leibniz the former’s works and that Leibniz found in them his own system. XXIII, 461: Herder praises Leibniz’ efforts in behalf of the Royal Scientific Society in Berlin.