One universe made up all that is; and one God in it all, and one principle of being, and one law, the reason shared by all thinking creatures, and one truth.

The first rule is to keep an untroubled spirit. The second is to look things in the face and know them for what they are.

The things you think about determine the quality of your mind. Your soul takes on the color of your thoughts.

We are born for synergy, just like the feet, just like the hands, just like the eyes, just like the rows of upper and lower teeth. Working against each other is unnatural, and being annoyed and turning one's back is counterproductive.

But if anything in thy own dispositiongives thee pain, who hinders thee from correcting thy opinion? And even if thou art pained because thou art not doing some particular thing which seems to thee to be right, why dost thou not rather act than complain?- But some insuperable obstacle is in the way?- Do not be grieved then, for the cause of its not being done depends not on thee.- But it is not worth while to live if this cannot be done.- Take thy departure then from life contentedly, just as he dies who is in full activity, and well pleased too with the things which are obstacles.

The body of an actor can be either his best friend or his worst enemy.

How much time he saves who does not look to see what his neighbor says or does or thinks.