Crescimento económico em poucas palavras

"It is important to remember that in market economies living standards rise as a result of capital accumulation, which allows labor to be more productive, which in turn results in greater output per worker, allowing for increased consumption and leisure. However, capital investment can be increased only if adequate savings are available to finance it. Savings, of course can come into existence only as a result of [consuming less than one earns] and self-sacrifice." (pp. 6–7) Peter Schiff