As  the polices and values of Europe were shaped by revulsion about WWII. While people ought to learn from their mistakes. Still learning from mistakes is a kind of negative learning. For positive values it is still important to go to the Old Testament. But since the basic values of the Old Testament are  not not stated openly it is important to learn Musar--books of Ethics written in the Middle ages whose stated purpose was to find the basic values of the Old Testament and the Talmud and put them in simple form so everyone can understand them.

[Not all of Musar I am very happy with. Almost everyone after the Shatz got a good dose of that poison that went into him and his false prophet. That includes the Ramchal. The way I see it most of everything that came after the Shatz is problemtic exception the people that wrote straight of the Talmud with no connection to  Hashkafa [world view issues]