He who lives in harmony with himself lives in harmony with the universe.
No man is happy who does not think himself so.
Blot out vain pomp; check impulse; quench appetite; keep reason under its own control.
Vex not thy spirit at the course of things, they heed not thy vexations
Retire into thyself. The rational principle which rules has this nature, that it is content with itself when it does what is just, and so secures tranquility.
Death hangs over thee, While thou still live, while thou may, do good.