You have to be aware of the age of these books, and esp. the comments, written in 1910. The books itself did age quite properly, but the lectures and comments not so. E.g. they are in todays standard extremely racist, unscientific and religious, all over in praise of the Aryan race, the superiority of Christianism and mixed in the Jews.

E.g. Vol 51, p22: "The Germans were crude and military; the Latins were subtle and peaceful".

A modern canon would be much be better, such as we learn it in todays schools.