Paul Samuelson

"Growth requires change, and change requires courage."

"The only thing constant is change itself."

"Success is not final, failure is not fatal."

"The best time to plant a tree was twenty years ago. The second best time is now."

"Reading is to the mind what exercise is to the body."

"An optimist believes we live in the best of all possible worlds."

"Knowledge compounds like interest."

"The world is full of problems, but it is also full of solutions."

"True wisdom comes from understanding your limitations."

"Innovation requires both creativity and discipline."

"The greatest economic problem is distribution of resources."

"Markets are not infallible but they are superior to central planning."

"Price controls create shortages."

"Supply and demand are fundamental economic forces."

"Inflation erodes the value of money over time."

"Interest rates affect the entire economy."

"Unemployment has real human costs."

"Poverty is not inevitable; it is a policy choice."

"Fair competition benefits consumers."

"Specialization increases productivity."

"Trade enriches both parties."

"Government has a role in correcting market failures."

"Taxes are the price we pay for civilization."

"Spending stimulates the economy."

"Saving provides capital for investment."

"Risk and reward are inseparable."

"Diversification reduces risk."

"Long-term thinking beats short-term thinking."

"Compound interest is the eighth wonder of the world."

"Data matters more than opinion."