No one but a saint should attempt to write about a saint. This is less evidently so in the case of active saints or martyrs, those whose external actions, whose whole lives are in themselves striking or edifying; then a biography can be of interest in the same way as it would be of any other outstanding personality; but of the contemplative saint, the mystic, there is often little to recount in the medium of time and place; very often they are monks or nuns whose entire lives have passed in uneventful routine of religious duties; the drama is interior and hidden.

It is true that St Teresa founded convents, that St John of the Cross was for a time in prison, that St Bernard and St Catherine intervened in the political crises of their times. But these are not the important things about them; these actions, however useful and successful, are accidental, and sorry to the true significance of their lives—the union of their souls with God in love, and even in the more specific sense, union through the interior way of contemplation.