"And you needn't worry about being useful,' said Dame Ursula. 'When you have become God's in the measure He wants, He, Himself, will know how to bestow you on others.' She was quoting St Basil. Then her face grew wistful, '"Unless He prefer, for thy greater advantage, to keep thee all to himself." That does happen to a few people. Yet, paradoxically, they have the greatest influence."