It may be required for the education of a philosopher that he himself has also once stood on all those steps on which his servants, the scientific labourers of philosophy, remain standing – have to remain standing; he himself must perhaps have been critic and sceptic and dogmatist and historian and, in addition, poet and collector and traveller and reader of riddles and moralist and seer and ‘free spirit’ and practically everything, so as to traverse the whole range of human values and value-feelings and be able to gaze from the heights into every distance, from the depths into every height,
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