Christoph von Sigwart,
Logic — Author's Preface to First German Edition
(1895)
“ In a science which has been so much discussed it seemed to me that to commend or dispute even the most important previous doctrines would be an undue extension of the work; and I further feared lest the course of investigation and exposition prescribed by my view of the subject would be confused if I made a rule of discussing at every point opinions which are to a large extent based upon presuppositions quite different from my own. I have therefore thought it right to confine myself to what was indispensable for the correct representation and justification of my own doctrine. ”
