PREFACE xi 



or influence for good, the thought and conduct of their 

 fellow -men in any department of life and action ; in a word, 

 for all who aspire to a liberal education : a sound training in 

 the fundamental truths of philosophy speculative, ethical, 

 and religious is usually indispensable. And this presup 

 poses such a formation of mind as can be secured only 

 by the study of logic : not indeed of the arid formalisms 

 which sometimes pass for logic, but of the suggestive and 

 illuminating truths which may be gathered from a serious 

 analysis of the thinking processes of the human mind. 

 Such analysis is bound to lead the student into the very 

 midst of purely philosophical inquiries : and at the same 

 time to equip him for carrying these on successfully. 



The preparation of the present work has been in 

 fluenced by those considerations. Possibly it may, on that 

 account, be found to suit the needs of students in other 

 colleges and universities. It has been the author s desire 

 and endeavour to consult for their special wants in the 

 first place. At the same time, he hopes that his treat 

 ment of the subject is such as will appeal to all who take 

 a general interest in mental science, whether logical or 

 philosophical. 



