Today the world changes so quickly that in growing up we take leave not just of youth but of the world we were young in.

Today the world changes so quickly that in growing up we take leave not just of youth but of the world we were young in.

今天，世界变化如此之快，在成长的过程中，我们不仅告别了青春，也告别了我们年轻时所在的世界。

-- Sir Peter Medawar 彼得·梅达沃爵士