Starting out to make money is the greatest mistake in life. Do what you feel you have a flair for doing, and if you are good enough at it, the money will come.
Infinite growth of material consumption in a finite world is an impossibility.
E. F. Schumacher
The only way for a rich man to be healthy is by exercise and abstinence, to live as if he were poor.
The propensity to truck, barter and exchange one thing for another is common to all men, and to be found in no other race of animals.
The rate of interest acts as a link between income-value and capital-value.