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His negation had no reference, --far from it, --to women, to love, or to friends, things where the pedantic and ostentatious scepticism of literary men of the Larra type usually finds its fodder; his nihilism was much more the confusion and discomposure of one that explores a region well or badly, and finds no landmarks there, no paths, and returns with a belief that even the compass is not exact in what it shows.

Such are the words of the psychologist, DuBois-Reymond, in one of his well-known lectures. The agnostic attitude is the most seemly that it is possible to take. Nowadays, not only have all religious ideas been upset, but so too has everything which until now appeared most solid, most indivisible. Who has faith any longer in the atom? Who believes in the soul as a monad? Who believes in the objective validity of the senses?