The philosophy asserts that virtue {meaning, chiefly, the four cardinal virtues of self-control, courage, justice, and wisdom} is happiness, and it is our perceptions of things-rather than the things themselves-that cause most of our trouble. Stoicism teaches that we can't control or rely on anything outside what Epictetus called our "reasoned choice"-our ability to use our reason to choose how we categorize, respond, and reorient ourselves to external events."
( Ryan Holiday )
[ The Daily Stoic: 366 ]
www.QuoteSweet.com