From reading too much, and sleeping too little, his brain dried up on him and he lost his judgment. – Miguel de Cervantes who was born on this day in 1547.
He also said:
Too much sanity may be madness and the maddest of all, to see life as it is and not as it should be.
Never stand begging for that which you have the power to earn.
The gratification of wealth is not found in mere possession or in lavish expenditure, but in its wise application.