The Wealth of Nations by Part 5 Chapter 1 Page 274

use towards the defence of the society, yet to prevent that sort of mental mutilation, deformity, and wretchedness, which cowardice necessarily involves in it, from spreading themselves through the great body of the people, would still deserve the most serious attention of government, in the same manner as it would deserve its most serious attention to prevent a leprosy or any other loathsome and offensive disease, though neither mortal nor dangerous, from spreading itself among them, though perhaps no other public good might result from such attention besides the prevention of so great a public evil.

The same thing may be said of the gross ignorance and stupidity which, in a civilised society, seem so frequently to benumb the understandings of all the inferior ranks of people. A man without the proper use of the