PREFACE TO THE FIRST EDITION 1933
It is difficult for a philosopher to realise that anyone really is confining his discussion within the limits that I have set before you. The boundary is set up just where he is beginning to get excited. (573) A. N. whitehead
That all debunkers must add new boshes of their own to supply the vacua created by the annihilation of the old, is probably a law of nature. (22)
E. T. BELL
Teaching without a system makes learning difficult. The Talmud
The layman, the 'practical' man, the man in the street, says, What is that to me? The answer is positive and weighty. Our life is entirely dependent on the established doctrines of ethics, sociology, political economy, government, law, medical science, etc. This affects everyone consciously or unconsciously, the man in the street in the first place, because he is the most defenseless. (280) A. K.
When new turns in behaviour cease to appear in the life of the individual its behaviour ceases to be intelligent. (106) C. E. COGHILL * see page xii
'Tis a lesson you should heed,
Try again; If at first you don't succeed,
Try again; Then your courage should appear, For if you will persevere You will conquer, never fear,
William Edward Hickson.
The main portions of the present work have already been presented in the form of lectures before different universities, technological institutes, teachers' and physicians' associations, and other scientific bodies. The general outline was presented for the first time before the International Mathematical Congress in Toronto in 1924, and published in the form of a booklet. A further elaboration of the system was read before the Washington (D. C.) Society for Nervous and Mental Diseases in 1925, and the Washington (D. C.) Psychopatho-logical Society in 1926, and later published. A fuller draft was presented before the Congres des mathematiciens des pays Slaves, in Warsaw, Poland, in 1929. A special and novel aspect of the subject, in connection with the conditional reflexes of Pavlov, was outlined before the First International Congress of Mental Hygiene, Washington, D.