Kokoro, by Natsume Soseki (paragraph #842)

小供は怜悧さうな眼に笑を漲らして、首肯いて見せた。

translation

The child nodded his head with a smile in his prudent eyes.

kanji (pronunciations & definitions)
小供: child (こども), children 怜悧: clever (れいり), bright, sharp, wise, intelligent : eye (め), eyeball, eyesight, sight, vision : laugh (わらい), laughter, smile, sneer, sex aids (e.g. dildos, pornographic books, erotic woodblock prints, etc.)
: looking (み), viewing, (please) try (to), view (of life, etc.) (けん), outlook

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