“Youth is a wonderful thing. What a crime to waste it on children”

“Children's games should be seen as their most serious-minded activity”

“Spread love everywhere you go: first of all in your own home. Give love to your children, to a wife or husband, to a next-door neighbor ”

“If you can’t explain it to a six year old, you don’t understand it yourself”

“Make it a rule never to give a child a book you would not read yourself.”

“We should not teach children the sciences; but give them a taste for them.”