A virtue must be our invention; it must spring out of our personal need and defence. In every other case it is a source of danger. That which does not belong to our life menaces it; a virtue which has its roots in mere respect for the concept of “virtue,” as Kant would have it, is pernicious. “Virtue,” “duty,” “good for its own sake,” goodness grounded upon impersonality or a notion of universal validity—these

