In Beyond Good and Evil aphorism/paragraph 212 says this:
At present, on the contrary, when throughout Europe the herding-animal alone attains to honours, and dispenses honours, when "equality of right" can too readily be transformed into equality in wrong—I mean to say into general war against everything rare, strange, and privileged, against the higher man, the higher soul, the higher duty, the higher responsibility, the creative plenipotence and lordliness—at present it belongs to the conception of "greatness" to be noble, to wish to be apart, to be capable of being different, to stand alone, to have to live by personal initiative, and the philosopher will betray something of his own ideal when he asserts "He shall be the greatest who can be the most solitary, the most concealed, the most divergent, the man beyond good and evil, the master of his virtues, and of super-abundance of will; precisely this shall be called GREATNESS: as diversified as can be entire, as ample as can be full."
Why would a philospher be betraying something of his own ideal when he asserts that last sentence quoted above?