ers," beginning at the very beginning of each subject and working
methodically onwards. That is not the idea.

What then is the aim of this book? It is to give the intelligent
student-citizen, otherwise called "the man in the street," a bunch of
intellectual keys by which to open doors which have been hitherto shut
to him, partly because he got no glimpse of the treasures behind the
doors, and partly because the portals were made forbidding by an
unnecessary display of technicalities. Laying aside conventional modes
of treatment and seeking rather to open up the subject as one might on a
walk with a friend, the work offers the student what might be called
informal introductions to the various departments of knowledge. To put
it in another way, the articles are meant to be clues which the reader
may follow till he has left his starting point very far behind. Perhaps
when he has gone far on his own he will not be ungrateful to the simple
book of "instructions to travellers" which this "Outline of Science" is
intended to be. The simple "bibliographies" appended to the various
articles will be enough to indicate "first books." Each article is meant
to be an invitation to an intellectual adventure, and the short lists of
books are merely finger-posts for the beginning of the journey.

We confess to being greatly encouraged by the reception that has been
given to the English serial issue of "The Outline of Science." It has
been very hearty--we might almost say enthusiastic. For we agree with
Professor John Dewey, that "the future of our civilisation depends upon
the widening spread and deepening hold of the scientific habit of mind."
And we hope that this is what "The Outline of Science" makes for.
Information is all to the good; interesting information is better still;
but best of all is the education of the scientific habit of mind.
Another modern philosopher, Professor L. T. Hobhouse, has declared that
the evolutionist's mundane goal is "the mastery by the human mind of the
conditions, internal as well as external, of its life and growth." Under
the influence of this conviction "The Outline of Science" has been
written. For life is not for science, but science for life. And even
more than science, to our way of thinking, is the individual development
of the scientific way of looking at things. Science is our legacy; we
must use it if it is to be our very own.

CONTENTS

INTRODUCTION