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mathematical ground. I should not, however, have,
mentioned it in these lectures for any other purpose than to say
how much nearer the mathematician comes to
understanding the nature of logic than do the
psychologists or even the greater part of those who
call themselves logicians. I refer to those who think
that logic, if not a branch of psychology, is founded
in psychology, since it deals with human
thought. Yes it deals with human thought
just as the theory of the quadratic equation
deals with human thought,--just so much
and no more. I have not the slightest doubt
that if pure mathematics had not so developed
itself that it was perfectly hopeless to attempt
to give it a new direction, the present race of