A System of Logic, Ratiocinative and Inductive

Mill's assessment of Auguste Comte, praising his philosophy of the sciences and rejecting his later religion of humanity. A clear guide to positivism by one of its early admirers.

John Stuart Mill

Mill's long critique of the Scottish philosopher William Hamilton, defending empiricism and the psychology of association. It contains his well-known definition of matter as a permanent possibility of sensation.

John Stuart Mill