"It is unquestionably the peacefulness and calm of the Spinozist system which particularly produces the idea of its depth, and which, with hidden but irresistible charm, has attracted so many minds. The Spinozist system will also always remain in a certain sense a model. A system of freedom — but with just as great contours, with the same simplicity, as a perfect counter-image (Gegenbild) of the Spinozist system — this would really be the highest system. This is why Spinozism, despite the many attacks on it, and the many supposed refutations, has never really become something truly past, never been really overcome up to now, and no one can hope to progress to the true and the complete in philosophy who has not at least once in his life lost himself in the abyss of Spinozism. Nobody who wishes to arrive at his own firm conviction should leave unread the main work of Spinoza, his Ethics (for he presented his system under this title), and I should like to urge everyone who is seriously concerned with his education not only to study assiduously on his own, which no teacher can replace, but to be most conscientious and careful in the choice of what he reads."