Diet and Exercise as a Metaphor for Knowledge

Those who eat most, and who take the most exercise, are not in better health than they who eat just as much as is good for them; and in the same way it is not those who know a great many things, but they who know what is useful who are valuable men.

 France's Social Programs are Behind Their Better Health

The creation of public programs to improve the health of women and babies began in nineteenth-century Europe, where governments found themselves in need of robust young men to fight their wars and expand their empires. Following a crushing defeat in the 1871 Franco-Prussian War, for example, France set up a series of programs intended to care for pregnant women, promote breastfeeding, and improve infant welfare. (David Barker has suggested, half seriously, that this early attention to materna...