Found this while looking for something else.
The prime purpose of being four is to enjoy being four - of secondary importance is to prepare for being five. ~Jim Trelease, The Read-Aloud Handbook, 1985
You are worried about seeing him spend his early years in doing nothing. What! Is it nothing to be happy? Nothing to skip, play, and run around all day long? Never in his life will he be so busy again. ~Jean-Jacques Rousseau, Emile, 1762
Courtesy of www.quotegarden.com