Porter, Burton F. <br/><br/>
Philosophy :  a literary and conceptual approach,  
Burton F. Porter 
 - 2nd ed. 
 - New York :  Harcourt Brace Jovanovich,  1980 
 - 496 p. ;   24 cm. 
<br/><br/>p. 492-494 
<br/><br/><label>ISBN: </label>0155705539 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Philosophy--Addresses, essays, lectures