“The worst part a man can suffer is to have insight into much and power over nothing.”

“Suffering arises from trying to control what is uncontrollable, or from neglecting what is within our power.”

“Democracy can hardly be expected to flourish in societies where political and economic power is being progressively concentrated and centralized. But the progress of technology has led and is still leading to just such a concentration and centralization of power.”

“I am no longer cursed by poverty because I took possession of my own mind, and that mind has yielded me every material thing I want, and much more than I need. But this power of mind is a universal one, available to the humblest person as it is to the greatest.”

“But this I know: if all mankind were to take their troubles to market with the idea of exchanging them, anyone seeing what his neighbor's troubles were like would be glad to go home with his own.”

“The most hateful grief of all human griefs is to have knowledge of a truth, but no power over the event.”

“The secret of success is that it is not the absence of failure, but the absence of envy.”