It will suffice thee to remember as concerning pain ... that the mind may, by stopping all manner of commerce and sympathy with the body, still retain its own tranquility.

He who follows reason in all things is both tranquil and active at the same time, and also cheerful and collected.

I am called to man's labour; why then do I make a difficulty if I am going out to do what I was born to do and what I was brought into the world for?

In the morning, when you are sluggish about getting up, let this thought be present: 'I am rising to a man's work.'

If you are pained by any external thing, it is not this that disturbs you, but your own judgment about it.

Most of what we say and do is not essential. If you can eliminate it, you'll have more time, and more tranquillity. Ask yourself at every moment, 'Is this necessary?'

Your mind will take on the character of your most frequent thoughts: souls are dyed by thoughts.