"The important thing is not to stop questioning. Curiosity has its own reason for existence."

"Anyone who has never made a mistake has never tried anything new."

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

"If A is a success in life, then A equals x plus y plus z. Work is x; y is play; and z is keeping your mouth shut."

"Imagination is the preview of life's coming attractions."