A Treatise Concerning the 
Principles of Human Knowledge
by George Berkeley 
 
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Human Knowledge 
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Title: A Treatise Concerning the Principles of Human Knowledge 
Author: George Berkeley 
Release Date: December, 2003 [Etext #4723] [Yes, we are more than 
one year ahead of schedule] [This file was first posted on March 7, 
2002] 
Edition: 10 
Language: English 
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A Treatise Concerning the Principles of Human Knowledge by George 
Berkeley (1685-1753) 
WHEREIN THE CHIEF CAUSES OF ERROR AND DIFFICULTY 
IN THE SCIENCES, WITH THE GROUNDS OF SCEPTICISM, 
ATHEISM, AND IRRELIGION, ARE INQUIRED INTO. 
 
DEDICATION 
 
To the Right Honourable THOMAS, EARL OF PEMBROKE, &C., 
Knight of the most Noble Order of the Garter and one of the Lords of 
Her Majesty's most honourable privy council. 
My Lord, 
You will perhaps wonder that an obscure person, who has not the 
honour to be known to your lordship, should presume to address you in 
this manner. But that a man who has written something with a design to 
promote Useful Knowledge and Religion in the world should make 
choice of your lordship for his patron, will not be thought strange by 
any one that is not altogether unacquainted with the present state of the 
church and learning, and consequently ignorant how great an ornament 
and support you are to both. Yet, nothing could have induced me to 
make you this present of my poor endeavours, were I not encouraged 
by that candour and native goodness which is so bright a part in your 
lordship's character. I might add, my lord, that the extraordinary favour 
and bounty you have been pleased to show towards our Society gave 
me hopes you would not be unwilling to countenance the studies of one 
of its members. These considerations determined me to lay this treatise
at your lordship's feet, and the rather because I was ambitious to have it 
known that I am with the truest and most profound respect, on account 
of that learning and virtue which the world so justly admires in your 
lordship, MY LORD, Your lordship's most humble and most devoted 
servant, 
GEORGE BERKELEY 
 
* * * * 
 
PREFACE 
 
What I here make public has, after a long and scrupulous inquiry, 
seemed to me evidently true and not unuseful to be known--particularly 
to those who are tainted with Scepticism, or want a demonstration of 
the existence and immateriality of God, or the natural immortality of 
the soul. Whether it be so or no I am content the reader should 
impartially examine; since I do not think myself any farther concerned 
for the success of what I have written than as it is agreeable