Marcus Aurelius Quotes
A 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.
Aurelius, Marcus. Meditations. Translated by Maxwell Staniforth, Penguin Books, 1964.
Marcus Aurelius Antoninus was Roman emperor from 161 to 180 and a Stoic philosopher. He was the last of the rulers known as the Five Good Emperors (a term coined some 13 centuries later by Niccolò Machiavelli), and the last emperor of the Pax Romana (27 BC to 180 AD), an age of relative peace and stability for the Roman Empire. He served as Roman consul in 140, 145, and 161.