12 HUME i 



twenty-one and composed before he had reached 

 the age of twenty-five.* 



Under these circumstances, it is probably the 

 most remarkable philosophical work, both intrin- 

 sically and in its effects upon the course of 

 thought, that has ever been written. Berkeley, 

 indeed, published the "Essay Towards a New 

 Theory of Vision/' the " Treatise Concerning the 

 Principles of Human Knowledge/' and the " Three 

 Dialogues," between the ages of twenty-four and 

 twenty-eight; and thus comes very near to Hume, 

 both in precocity and in influence; but his inves- 

 tigations are more limited in their scope than 

 those of his Scottish contemporary. 



The first and second volumes of the " Treatise/' 

 containing Book I., " Of the Understanding/' and 

 Book II., " Of the Passions," were published in 

 January, 1739. The publisher gave fifty pounds 

 for the copyright; which is probably more than 

 an unknown writer of twenty-seven years of age 

 would get for a similar work, at the present time. 

 But, in other respects, its success fell far short of 

 Hume's expectations. In a letter dated the 1st of 

 June, 1739, he writes, 



" I am not much in the humour of such compositions at 

 present, having received news from London of the success 



* Letter to Gilbert Elliot of Minto, 1751. " So vast an 

 undertaking, planned before I was one-and-twenty, and 

 composed before twenty-five, must necessarily be very de- 

 fective. I have repented my haste a hundred and a hun- 

 dred times." 



