Here are a handful of quotes about children that I think are great:
"We worry about what a child will become tomorrow, yet we forget that he is someone today."
"You can learn many things from children. How much patience you have, for instance."
~ Franklin P. Jones
"A child can ask questions that a wise man cannot answer."
~ Author unkown
"While we try to teach our children all about life,
Our children teach us what life is all about."