Purpose in life

If you ever turn your will to things outside your control in order to impress someone, be sure that you have wrecked your whole purpose in life. — Epictetus, Enchiridion

Serenity and stability are results of your choices and judgement

Serenity and stability are results of your choices and judgement, not your environment. If you seek to avoid all disruptions to tranquility — other people, external events, stress — you will never be successful. Your problems will follow you whenever you run and hide. But if you seek to avoid the harmful and disruptive judgements …

Persistence is more than intelligence

“High but not the highest intelligence, combined with the greatest degree of persistence, will achieve greater eminence than the highest degree of intelligence with somewhat less persistence.” — Catharine Cox