Philosophy tells us that it is the business of everybody, nations as well as individuals, to look behind their sufferings and thus ascertain the causes of which these sufferings are merely effects. If men wish to start a better and happier life, it is needful that they should understand the lessons of their own past. If this happier existence is to be a reality, it cannot come about unless they break inwardly and outwardly with this past.
-- Notebooks Category 20: What Is Philosophy? > Chapter 3: Its Requirements > # 131