إن أعمق دافع في طبيعة الإنسان هو الرغبة في أن يكون مهماً

“We always live at the time we live and not at some other time, and only by extr…”

“The educational process has no end beyond itself; it is its own end.”

“A problem well put is half solved.”

“Every great advance in science has issued from a new audacity of imagination. ”