No More Learning

At last, when reading a second or third
time the chapters on Reasoning in the second volume of Dugald Stewart,
interrogating myself on every point, and following out, as far as I knew
how, every topic of thought which the book suggested, I came upon an
idea of his           the use of axioms in ratiocination, which I did
not remember to have before noticed, but which now, in meditating on it,
seemed to me not only true of axioms, but of all general propositions
whatever, and to be the key of the whole perplexity.