• A preschool child does not emerge from your toddler on a given date or birthday. He becomes a child when he ceases to be a wayward, confusing, unpredictable and often balky person-in-the- making, and becomes a comparatively cooperative, eager-and-easy-to-please real human being--at least 60 per cent of the time.

    Penelope Leach (1989). “Your baby & child: from birth to age five”, Alfred A. Knopf