"The more we value things outside our control, the less control we have."

"It is not poverty that is feared, but the opinion about poverty."

"If a man is unhappy, this must be due to his own fault, that he has forgotten that all things are in his own power."

"Freedom is the only worthy goal in life. It is won by disregarding things that are not within our control."

"What does not transmit light creates darkness."