Philosophical Essays,by Bertrand Russell(London & New York; Longmans, 1910. vi,185 p. 24 cm. )

Preface to 1966 ed.

The volume to which this is a preface is essentially a reprint of a book, with the same title, published in 1910. However, two essays in that volume, namely 'The Free Man's Worship' and 'The Study of Mathematics', were reprinted in 'Mysticism and Logic' and are therefore not included in the present volume. They are replaced by an article on history and one on Poincare's 'Science and Hypothesis'.
I have not attempted to make such emendations in the texts reprinted in this volume as might be called for by changes in my opinions during the intervening fifty-five years. The chief change is that I no longer believe in objective ethical values as I did when (following Moore) I wrote the first essay in the present volume.