“Loss is nothing else but change, and change is Nature's delight.” — Marcus Aurelius · Meditations, Book IX
“Never let the future disturb you. You will meet it, if you have to, with the same weapons of reason which today arm you against the present.” — Marcus Aurelius · Meditations, Book VII
“How long are you going to wait before you demand the best for yourself?” — Epictetus · Discourses, Book I
“First say to yourself what you would be; and then do what you have to do.” — Epictetus · Discourses, Book III
“Men are disturbed not by the things which happen, but by the opinions about the things.” — Epictetus · Enchiridion, Chapter 5