On occasion of this book I should like to express my gratitude to the John Simon Guggenheim Memorial Foundation for enabling me to bring the state of the problems up to date through studies in Europe in the summer of 1950. These studies were, furthermore, facilitated by a grant-in-aid from the Research Council of Louisiana State University. My colleague, Professor Nelson E. Taylor, had the kindness to read the manuscript; I have gratefully availed myself of his advice in matters of style. My thanks for excellent secretarial help go to Miss Josephine Scurria. The Viking Press has kindly permitted the quotation of passages from a book published by it.
This book has grown from six lectures on “Truth and Representation” given in 1951 under the auspices of the Charles R. Walgreen Foundation. It is a pleasant opportunity to extend my thanks again to the Foundation as well as to its distinguished chairman, Professor Jerome G. Kerwin.
Baton Rouge, Louisiana