Christ never meant that we were to remain children in intelligence: on the contrary. He told us to be not only 'as harmless as doves', but also 'as wise as serpents'. He wants a child's heart, but a grown-up's head. He wants us to be simple, single-minded, affectionate, and teachable, as good children are; but He also wants every bit of intelligence we have to be alert at its job, and in first-class fighting trim.