The Principles of Mathematics Revisited
This volume argues that many of the basic assumptions common to logic, philosophy of mathematics and metaphysics are in need of change. The author proposes a... »

Inquiry As Inquiry
Is a genuine logic of scientific discovery possible? In the essays collected here, the author defends an affirmative answer, and also outlines such a logic. ... »

Language, Truth And Logic In Mathematics
Language, Truth and Logic in Mathematics »

Aspects Of Metaphor
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The Logic of Epistemology and the Epistemology of Logic
Selected Essays »

From Dedekind to Godel
Essays on the Development of the Foundations of Mathematics »

Ludwig Wittgenstein, Half-Truths and One-And-A-Half-Truths
Half-Truths And One-And-A-Half-Truths »

On Godel
On Godel »

Lingua Universalis vs. Calculus Ratiocinator
An Ultimate Presupposition of Twentieth-century Philosophy »

Analyses of Aristotle
Aristotle serves as an example of a thinker who did not rely on the distinction between the allegedly different Fregean senses, thereby shedding new light on... »