“Curiosity in children is but an appetite after knowledge; and therefore ought to be encouraged in them.”
Locke treats curiosity as a natural drive toward knowledge and argues that education should protect and guide it rather than shame sincere questions.
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Some Thoughts Concerning Education, Part VIII, section 118. Locke calls children's curiosity an appetite after knowledge and gives practical directions for encouraging questions. The passage remains seventeenth-century educational/parenting counsel rather than contemporary developmental-science or guaranteed learning-outcome evidence.