There seems to be an unwritten rule on Wall Street: If you don't understand it, then put your life savings into it. Shun the enterprise around the corner, which can at least be observed, and seek out the one that manufactures an incomprehensible product.
Peter LynchIn the long run, it's not just how much money you make that will determine your future prosperity. It's how much of that money you put to work by saving it and investing it.
Peter LynchIf you can find a company that can get away with raising prices year after year without losing customers (an addictive product such as cigarettes fills the bill), you've got a terrific investment.
Peter Lynch