As is the case with many great letter-writers, though not with all, Catherine reveals herself largely through her relations with others. Some of her letters, indeed, are elaborate religious or political treatises, and seem at first sight to have little personal colouring; yet even these yield their full content of spiritual beauty and wisdom only when one knows the circumstances that called them forth and the persons to whom they were addressed. A mere glance at the index to her correspondence shows how widely she was in touch with her time. She was a woman of personal charm and of sympathies passionately wide, and she gathered around her friends and disciples from every social group in Italy, not to speak of many connections formed with people in other lands. She wrote to prisoners and outcasts; to great nobles and plain business men; to physicians, lawyers, soldiers of fortune; to kings and queens and cardinals and popes; to recluses pursuing the Beatific Vision, and to men and women of the world plunged in the lusts of the flesh and governed by the pride of life. The society of the fourteenth century passes in review as we turn the pages. Catherine wrote to all these people in the same simple spirit. With one and all she was at home, for all were to her, by no merely formal phrase, "dearest brothers and sisters in Christ Jesus." One knows not whether to be more struck by the outspoken fearlessness of the woman or by her great adaptability. She could handle with plain directness the crudest sins of her age; she could also treat with subtle insight the most elusive phases of spiritual experience. No greater distance can be imagined than that which separates the young Dominican with her eyes full of visions from a man like Sir John Hawkwood, reckless free-lance, selling his sword with light-hearted zeal to the highest bidder, and battening on the disorder of the times. Catherine writes to him with gentlest assumption of fellowship, seizes on his natural passions and tastes, and seeks to sanctify the military life of his affections. With her sister nuns the method changes. She gives free play to her delicate fancy, drawing her metaphors from the beauty of nature, from tender, homely things, from the gentle arts and instincts of womanhood. Does she speak to Pope Gregory, the timid? Her words are a trumpet-call. To the harsh Urban, his successor? With finest tact she urges self-restraint and a policy of moderation. Temperaments of every type are to be met in her pages--a sensitive poet, troubled by "confusion of thought" deepening into melancholia; a harum-scarum boy, in whose sunny joyousness she discerns the germ of supernatural grace; vehement sinners, fearful saints, religious recluses deceived by self- righteousness, and men of affairs devoutly faithful to sober duty. Catherine enters into every consciousness. As a rule we associate with very pure and spiritual women, even if not cloistered, a certain deficient sense of reality.