En "...Wealth of Nations" de Adam Smith:
"The want of parsimony in time of peace, imposes the necessity of contracting debt in time of war. When war comes, there is no money in the treasury but what is necessary for carrying on the ordinary expense of the peace establishment [...] An immediate and great expense must be incurred in that moment of immediate danger, which will not wait for the gradual and slow returns of the new taxes. In this exigency government can have no other resource but in borrowing".
"In a rude state of society there are no great mercantile or manufacturing capitals [...] In such a state of things few people would be able, and no body would be willing, to lend their money to government on extraordinary exigencies. The sovereign feels that he must provide for such exigencies by saving, because he foresees the absolute impossibility of borrowing. This foresight increases still further his natural disposition to save".
Más y mejor:
"The progress of the enormous debts which at present oppress, and will in the long run probably ruin, all the great nations of Europe, has been pretty uniform".
PS: "Old reading does not mean authority but insight", (Paul Krugman).