في داخل كل طفل فراغٌ يؤلمه ويتوق إلى الإثارة، فإن لم نملأه بما هو مثيرٌ وممتعٌ ونافعٌ له، ملأه بما هو مثيرٌ وممتعٌ وليس نافعًا له.

“Every child has inside him an aching void for excitement and if we don't fill it with something which is exciting and interesting and good for him, he will fill it with something which is exciting and interesting and which isn't good for him.”Theodore Roosevelt