"For my part, I rather distrust men or concerns that rise up with the speed of rockets. Sudden rises are sometimes followed by equally sudden falls. I have most faith in the individual or enterprise that advances step by step. A mushroom can spring up in a day; an oak takes 50 years or more to reach maturity. Mushrooms don't last; oaks do. The real cause for an enormous number of business failures is premature over-expansion, attempting to gallop before learning to creep. Sudden successes often invite sudden reverses."