The safest way to double your money is to fold it over once and put it in your pocket.
— Kin Hubbard

A penny here, and a dollar there, placed at interest, goes on accumulating, and in this way the desired result is attained. It requires some training, perhaps, to accomplish this economy, but when once used to it, you will find there is more satisfaction in rational saving than in irrational spending.
— The Art of Money Getting, by P. T. Barnum

Put all good eggs in one basket and then watch that basket.
— Andrew Carnegie