Mary Stewart Quotes
The essence of wisdom is to know when to be doing, and when it's useless even to try
Citations
Stewart, Mary. The Crystal Cave. Hodder & Stoughton, 1970.
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Mary, Lady Stewart was a British novelist who developed the romantic mystery genre, featuring smart, adventurous heroines who could hold their own in dangerous situations. She also wrote children's books and poetry, but may be best known for her Merlin series, which straddles the boundary between the historical novel and fantasy.