"The important thing is not to stop questioning. Curiosity has its own reason for existence. One cannot help but be in awe when one contemplates the mysteries of eternity, of life, of the marvelous str…"

"Insanity: doing the same thing over and over again and expecting different results."

"The most beautiful thing we can experience is the mysterious. It is the source of all true art and all science. He to whom this emotion is a stranger, who can no longer pause to wonder and stand rapt …"

"Compound interest is the eighth wonder of the world. He who understands it, earns it... he who doesn't... pays it."

"It is not enough to teach a man a specialty. Through it he may become a kind of useful machine but not a harmoniously developed personality."