If a person had delivered up your body to some passer-by, you would certainly be angry. And do you feel no shame in delivering up your own mind to any reviler, to be disconcerted and confounded?

It is not a demonstration of kindness or friendship to the people we care about to join them in indulging in wrongheaded, negative feelings. We do a better service to ourselves and others by remaining detached and avoiding melodramatic reactions.

The essence of philosophy is that a man should so live that his happiness shall depend as little as possible on external things.

Not every difficult and dangerous thing is suitable for training, but only that which is conducive to success in achieving the object of our effort.

We have two ears and one mouth so that we can listen twice as much as we speak.

What is a good person? One who achieves tranquillity by having formed the habit of asking on every occasion, "what is the right thing to do now?"

A soul that makes virtue its companion is like an over-flowing well, for it is clean and pellucid, sweet and wholesome, open to all, rich, blameless and indestructible.