Article ID: CBB001211008

A Tale of Two Thinkers, One Meeting, and Three Degrees of Infinity: Leibniz and Spinoza (1675--8) (2011)

unapi

The article presents Leibniz's preoccupation (in 1675--6) with the difference between the notion of infinite number, which he regards as impossible, and that of the infinite being, which he regards as possible. I call this issue `Leibniz's Problem' and examine Spinoza's solution to a similar problem that arises in the context of his philosophy. `Spinoza's solution' is expounded in his letter on the infinite (Ep.12), which Leibniz read and annotated in April 1676. The gist of Spinoza's solution is to distinguish between three kinds of infinity and, in particular, between one that applies to substance, and one that applies to numbers, seen as auxiliaries of the imagination. The rest of the paper examines the extent to which Spinoza's solution solves Leibniz's problem. The main thesis I advance is that, when Spinoza and Leibniz say that the divine substance is infinite, in most contexts it is to be understood in non-numerical and non-quantitative terms. Instead, for Spinoza and Leibniz, a substance is said to be infinite in a qualitative sense stressing that it is complete, perfect and indivisible. I argue that this approach solves one strand of Leibniz's problem and leaves another unsolved.

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Authors & Contributors
Zellini, Paolo
Boccaccini, Federico
Leone, Alexandre
Christopher P. Noble
Vassányi, Miklós
Rossini, Paolo
Journals
British Journal for the History of Philosophy
Studies in History and Philosophy of Science
Science in Context
Review of Metaphysics
Physis: Rivista Internazionale di Storia della Scienza
Journal of the History of Philosophy
Publishers
UTET
Gangemi Editore
Villanova University
Springer
Oxford University Press
Giappichelli
Concepts
Philosophy
Infinity
Philosophy of mathematics
Mathematics
Number theory; number concept
Science
People
Leibniz, Gottfried Wilhelm von
Spinoza, Baruch
Descartes, René
Bruno, Giordano
Florenskij, Pavel
Wolff, Christian von
Time Periods
17th century
18th century
Early modern
Ancient
20th century
19th century
Places
Germany
Russia
Italy
Europe
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