Though some particular men may sometimes increase their expense very considerably, though their revenue does not increase at all, we maybe assured that no class or order of men ever does so; because, though the principles of common prudence do not always govern the conduct of every individual, they always influence that of the majority of every class or order.
 Adam Smith, The Wealth of Nations (1776). copy citation

add
Author Adam Smith
Source The Wealth of Nations
Topic prudence influence
Date 1776
Language English
Reference An Inquiry into the Nature and Causes of the Wealth of Nations
Note
Weblink http://www.gutenberg.org/files/3300/3300-h/3300-h.htm

Context

“That the greater part of the gold and silver which being forced abroad by those operations of banking, is employed in purchasing foreign goods for home consumption, is, and must be, employed in purchasing those of this second kind, seems not only probable, but almost unavoidable. Though some particular men may sometimes increase their expense very considerably, though their revenue does not increase at all, we maybe assured that no class or order of men ever does so; because, though the principles of common prudence do not always govern the conduct of every individual, they always influence that of the majority of every class or order. But the revenue of idle people, considered as a class or order, cannot, in the smallest degree, be increased by those operations of banking. Their expense in general, therefore, cannot be much increased by them, though that of a few individuals among them may, and in reality sometimes is.” source