Very little is needed to make a happy life; it is all within yourself, in your way of thinking.
Marcus AureliusEverything is in a state of metamorphosis. Thou thyself art in everlasting change and in corruption to correspond; so is the whole universe.
Marcus AureliusA man should always have these two rules in readiness. First, to do only what the reason of your ruling and legislating faculties suggest for the service of man. Second, to change your opinion whenever anyone at hand sets you right and unsettles you in an opinion, but this change of opinion should come only because you are persuaded that something is just or to the public advantage, not because it appears pleasant or increases your reputation.
Marcus Aurelius