The idea of ends, which controls the course of thought in Fichte as in Leibnitz, is entirely lacking in Condillac; that which is first in time, sensation, is for the Science of Knowledge and the Monadology only the beginning, not the essence, of psychical activity, while Condillac makes no distinction between beginning and ground, but expressly identifies principe and commencement.

The new exposition of the Leibnitzian monadology by Ed. Dillman, which has just appeared, we have not yet been able to examine [The English reader may be referred further to Dewey's Leibniz in Griggs's Philosophical Classics, 1888, and Duncan's Philosophical Works of Leibnitz (selections translated, with notes), New Haven, 1890, as well as to the work of Merz already mentioned.

Thus the idea of harmony forms the bridge between the Monadology and optimism.

The criterion of truth is insufficient, for Spinoza and Leibnitz built up their opposing theoriesthe pantheism of the one and the monadology of the otherfrom equally clear and distinct conceptions; tried by this standard individualism is just as true as pantheism.

In the Physical Monadology Kant gives his adherence to dynamism (matter the product of attraction and repulsion), and makes the monads or elements of body fill space without prejudice to their simplicity.

In Fries this non-Kantian element comes from Jacobi's philosophy of faith; in Herbart it comes from the monadology of Leibnitz, and the ancient Eleatico-atomistic doctrine; in Schopenhauer, from the religion of India and (as in Beneke) from the sensationalism of the English and the French.

Thus Lotze combines the monadology of Leibnitz with the pantheism of Spinoza, just as he understands how to reconcile the mechanical view of natural science (which is valid also for the explanation of organic life) with the teleology and the ethical idealism of Fichte.