TT Who needs basic biology to lead the League of Assassins ? <| sep |> Oh come on . Time to get over it . <| sep |> Critics who treat ' adult ' as a term of approval , instead of as a merely descriptive term , cannot be adult themselves . To be concerned about being grown up , to admire the grown up because it is grown up , to blush at the suspicion of being childish these things are the marks of childhood and adolescence . And in childhood and adolescence they are , in moderation , healthy symptoms . Young things ought to want to grow . But to carry on into middle life or even into early manhood this concern about being adult is a mark of really arrested development . When I was ten , I read fairy tales in secret and would have been ashamed if I had been found doing so . Now that I am fifty I read them openly . When I became a man I put away childish things , including the fear of childishness and the desire to be very grown up . C . S . Lewis