PETER: Wendy, one girl is worth more than twenty boys.

J. M. Barrie (1860-1937) Scottish novelist and dramatist [James Matthew Barrie]

Peter Pan, Act 1 (1904, pub. 1928)
    (Source)

In Barrie's novelization, Peter and Wendy, ch. 3 "Come Away, Come Away!" (1911), this is rendered:

"Wendy," he continued, in a voice that no woman has ever yet been able to resist, “Wendy, one girl is more use than twenty boys.”