A lucky chance is constant in nothing but inconstancy.

From the philosopher Catulus, never to be dismissive of a friend's accusation, even if it seems unreasonable, but to make every effort to restore the relationship to its normal condition.

Stop whatever you're doing for a moment and ask yourself: Am I afraid of death because I won't be able to do this anymore?

Is your cucumber bitter? Throw it away. Are there briars in your path? Turn aside. That is enough. Do not go on and say, "Why were things of this sort ever brought into this world?" neither intolerable nor everlasting - if thou bearest in mind that it has its limits, and if thou addest nothing to it in imagination. Pain is either an evil to the body (then let the body say what it thinks of it!)-or to the soul. But it is in the power of the soul to maintain its own serenity and tranquility. . . .

No matter what anyone says or does, my task is to be emerald, my color undiminished.

All things from eternity are of like forms and come round in circle.

When we consider we are bound to be serviceable to mankind, and bear with their faults, we shall perceive there is a common tie of nature and relation between us.