Ask yourself: Does this appearance (of events) concern the things that are within my own control or those that are not? If it concerns anything outside your control, train yourself not to worry about it.

You ought to choose both physician and friend, not the most agreeable, but the most useful.

As a man, casting off worn out garments taketh new ones, so the dweller in the body, entereth into ones that are new.

The materials are indifferent, but the use we make of them is not a matter of indifference.

With ills unending strives the putter off.

Not things, but opinions about things, trouble men.

Freedom and happiness are won by disregarding things that lie beyond our control.