Never hurry and never worry! - E.B. White

Anyone who writes down to children is simply wasting his time. You have to write up, not down. Children are demanding. They are the most attentive, curious, eager, observant, sensitive, quick, and generally congenial readers on earth.... Children are game for anything. I throw them hard words and they backhand them across the net.

Don't write about Man; write about a man.

He wiped his face with his handkerchief, for he was quite warm from the exertion of being Chairman of the World. It had taken more running and leaping and sliding than he had imagined.