Why Leibniz should have agreed with Berkeley about abstract ideas

Leibniz claims that Berkeley “wrongly or at least pointlessly rejects abstract ideas”. What he fails to realize, however, is some of his own core views commit him essentially the same stance. His belief this best (and thus most harmonious) possible world, which itself stems from Principle Sufficient Reason, leads infer mind and body must perfectly represent ‘express’ one another. In case thoughts admits can happen only in virtue thinking image that, being a mental copy brain state, expresses expressed by) state. But here faces problem. order for thought be genuinely abstract, its representational content differ any image, since latter something particular. case, an exact correspondence between accompanying state would not suffice establish perfect harmony body. Even on Leibniz’s principles, then, it appears was right dismiss ideas.